Long Formal Dresses

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Long Formal Dresses That Own the Moment

Whether you're making an entrance at a rooftop gala, attending a wedding under the stars, or stepping into a summer celebration, Windsor’s long formal dresses are here to define your standout season.

Silhouettes That Move with Purpose

From curve-hugging mermaid gowns to dreamy chiffon maxis and tailored A-line styles, these long dresses are built for impact. Lace-up backs, corset bodices, and thigh-high slits bring the drama, while flowy skirts and adjustable straps keep you cool and confident all night long.

Color Palettes That Light Up the Room

Make your mark in soft pastels like blush and lavender, or turn heads in rich jewel tones like emerald and plum. Prefer neutrals? Crisp white, champagne, and soft sage offer timeless polish. For a bolder look, try shimmering metallics in gold or bronze that glow under summer lights.

Details That Bring the Magic

Satin finishes, mesh insets, and glitter fabrics take your fit to the next level. Trending necklines—think sweetheart, square, off-the-shoulder—elevate the silhouette. Add rhinestone earrings and strappy heels to seal the look with shine.

Your next event is calling—answer with Windsor’s full collection of long formal dresses online, in-app, or in-store. Summer’s most unforgettable moments start with a dress that moves with you.

  • Jae Formal Mesh Ruched Mermaid Long Dress

    Special Occasion

    Play up your sophisticated side in the Jae formal mesh long dress that'll steal the scene! Designed with side ruched seams that accentuate your curves along the mermaid silhouette that flares out into the floor-length hem. 

    Fit & Features

    • Airy mesh fabric, full stretchy knit lining
    • Sleeveless cowl neckline, tie straps
    • Adjustable spaghetti straps
    • Back zipper and hook-eye closure
    • Side ruched seams, mermaid silhouette, floor-length hem
    • Runs true to size

     

    Where to Wear:

    Prom, weddings, black-tie parties, and fancy rehearsal dinners.

    Style Number/Barcode: 05002-7822

    Category Name: Long Formal Dresses

    Price: $59.90

    Availability: In Stock

    Available Color: RED, LIME, PINK, BLACK

    Available Size: XS, S, M, L, XL

    Product Badge:
    • Best Seller
  • Londyn Formal High Slit Convertible Dress

    Special Occasion 

    Showcase your unique style with a convertible formal dress that allows you to show off multiple styles! Londyn features a large slit at the bodice that allows you to create a one-shoulder neckline, boat neckline, halter neck, or an off-the-shoulder neckline. The slim-fit bodice leads to a curve-hugging A-line silhouette with a high side slit. The dress is composed of a smooth knit fabric that offers a form-hugging fit with a moderate stretch. Complete the look with heels and a clutch.

    Fit & Features

    • Large slit at the bodice
    • Multiple ways to wear neckline
    • A-line silhouette 
    • High side slit
    • Smooth knit fabric 
    • Form-hugging fit, moderate stretch 
    • Runs true to size

    Style Number/Barcode: 05002-1301

    Category Name: Long Formal Dresses

    Price: $9.97 $49.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Emmie Lace-Up Mermaid Satin Formal Dress

    Special Occasion

    Sleek and sophisticated! The Emmie satin formal dress exudes elegance with a lace-up back and flattering mermaid silhouette that accentuates your figure.

    With a smooth, luminous finish, this dress was made to shine. Keep the luxe look going with breathtaking satin prom dresses or go for a sophisticated statement with our wedding guest dresses.

    Fit & Features

    • Stretchy satin-knit fabric, lined bust
    • Spaghetti straps, V-neckline
    • Lace-up back
    • Mermaid silhouette, floor-length hem
    • Runs true to size

     

    Where to Wear:

    Prom, black-tie galas, weddings, bridesmaids, formal parties, and red-carpet events.

    Style Number/Barcode: 05002-8540

    Category Name: Long Formal Dresses

    Price: $64.90

    Availability: In Stock

    Available Color: BURGUNDY, HUNTER, SAGE, BROWN

    Available Size: XS, S, M, L

  • Chandler Strapless Lace-Up Sequin Formal Dress

    Special Occasion

    Chic with an elegant bold flair, the Chandler sequin formal dress was made to bring the drama. The floor-length dress has an alluring open back with a strappy lace-up design for customizable wear and a high slit for effortless allure.

    Flawlessly chic and bold, this dress is a statement. If strapless styles are your go-to, explore our strapless prom dresses or embrace effortless fashion with our formal dresses.

    Fit & Features

    • Sheer mesh fabric, full knit lining, moderate stretch
    • Strapless sweetheart neckline, angled design, structured boning
    • Open back, strappy lace-up design, tie closure
    • Fitted bodice, high waist seam, lower back zipper, hook and eye closure
    • Floor-length hem, high front slit, A-line silhouette
    • Sequin embroidery, scroll pattern
    • Runs true to size

     

    Where to Wear:

    Prom, black-tie galas, red-carpet events, and fancy soirees.

    Style Number/Barcode: 05002-6809

    Category Name: Long Formal Dresses

    Price: $49.97 $99.90

    On Sale: Yes

    Availability: In Stock

    Available Color: BLACK, NEON, ORANGE

    Available Size: M, S

    Product Badge:
    • Sale
  • Priscilla Formal Satin Strapless Mermaid Dress

    Special Occasion

    Make it an elegant entrance in the Priscilla formal satin dress with a curve-hugging mermaid silhouette and floor-sweeping hem for dramatic flair.

    This dress brings effortless confidence with every step. Love this look? Browse our stunning strapless prom dresses or find a statement style in our party dresses.

    Fit & Features

    • Lined silky satin fabric, minimal stretch
    • Strapless sweetheart neckline
    • Pleated, lightly padded bust, non-slip grip lining
    • Slim-fit bodice, high waist seam, hip-hugging fit
    • Floor-sweeping hem, mermaid silhouette
    • Runs true to size

     

    Where to Wear:

    Prom, weddings, bridesmaids, black-tie galas and events, and fancy milestone celebrations.

    Style Number/Barcode: 05002-7463

    Category Name: Long Formal Dresses

    Price: $69.90

    Availability: In Stock

    Available Color: SAGE, RED, DENIM, BROWN-2, TAUPE

    Available Size: XS, S, M, L

  • Jaime Feather Trim Velvet Mermaid Dress

    Special Occasion

    Bring the dramatic flair to your next formal soiree in the stunning Jaime feather trim velvet mermaid dress. She features a sleeveless square neckline with a chic marabou feather trim, spaghetti straps, a high waist seam, ruching down the side leading to a thigh-high slit, and a fitted, floor-length, mermaid silhouette. The luxe velvet fabric offers a moderate stretch. Style this dress with a glitzy evening bag.

    Fit & Features

    • Sleeveless square neckline, marabou feather trim
    • Spaghetti straps
    • High waist seam, ruching down the front, high slit
    • Floor-length hem, form-hugging fit, mermaid silhouette
    • Smooth velvet fabric, moderate stretch
    • Strapless or sticky bra recommended
    • Runs true to size

    Style Number/Barcode: 05002-2608

    Category Name: Long Formal Dresses

    Price: $19.97 $79.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Jillian Sequin Slit Long Formal Dress

    Special Occasion

    A sequin scroll pattern brings elegant sparkle to the Jillian formal long dress! She features a curve-flaunting silhouette designed with an alluring high front slit for movement and a floor-length hem for a sophisticated finish.

    This dazzling dress was made for the spotlight! Love the shimmer? Discover more sequin prom dresses or find a sophisticated look in our wedding guest dresses.

    Fit & Features

    • Sequin scroll pattern, mesh fabric, full knit stretchy lining
    • Sleeveless square neckline
    • Adjustable spaghetti straps, padded bust
    • Back zipper and hook-eye closure
    • Form-hugging silhouette, high front slit
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Prom, weddings, and black-tie parties.

    Style Number/Barcode: 05002-9232

    Category Name: Long Formal Dresses

    Price: $49.97 $109.90

    On Sale: Yes

    Availability: In Stock

    Available Color: TEAL, BLACK

    Available Size: XS, S, M

    Product Badge:
    • Sale
  • Gabrielle Formal Sequin Long Dress

    Special Occasion

    You'll shine in head-to-toe sequins on the Gabrielle formal dress boasting a lace-up back that stuns and a mermaid silhouette with a sultry high slit perfect for showing off your heels!

    This dazzling dress was made for the spotlight! Love the shimmer? Discover more sequin prom dresses or find a sophisticated look in our wedding guest dresses.

    Fit & Features

    • Sequin-embroidery, mesh fabric, stretchy knit lining
    • Cowl neckline, adjustable spaghetti straps
    • Lace-up back, zipper and hook-eye closure
    • Form-hugging, mermaid silhouette
    • Front slit, floor-length hem
    • Runs true to size

     

    Where to Wear:

    Prom, big birthday events, glamorous parties, and special occasions.

    Style Number/Barcode: 05002-9244

    Category Name: Long Formal Dresses

    Price: $15.97 $109.90

    On Sale: Yes

    Availability: In Stock

    Available Color: YELLOW

    Available Size: XS, S

    Product Badge:
    • Sale
  • Tabitha Formal High Slit Crepe Dress

    Special Occasion 

    Make your night one to remember in a formal long dress that stands out at your special event. Tabitha features a sleeveless square neckline, supportive padded cups, and spaghetti straps that lead to a lace-up back. Her slim-fit waist leads to a flattering A-line silhouette that is accented with a high side slit. She is composed of a crepe fabric that offers a form-hugging fit with a moderate stretch. Complete the look in this long dress with rhinestone heels and a sphere clutch.

    Fit & Features

    • Sleeveless square neckline, spaghetti straps
    • Built-in padded bust, no bra required
    • Lace-up back, tie closure
    • Back zipper closure
    • High waist seam, A-line silhouette, high side slit
    • Crepe-lined fabric, moderate stretch
    • Runs true to size

    Style Number/Barcode: 05002-2036

    Category Name: Long Formal Dresses

    Price: $9.97 $69.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Juliet Formal High Slit Dress 2

    Special Occasion

    Radiate effortless elegance in our sophisticated satin Juliet gown! She features adjustable spaghetti straps, a V-neck seamed bodice with light padding at bust, a high-seam waist, and a long, gently pleated A-line skirt with pockets at either hip and a dramatic center front slit. Juliet is fully lined and made from a smooth, shiny satin-like woven fabric with a touch of stretch. Pair this beautiful dress with a shimmering rhinestone necklace for a glamorous look.

    Shop Juliet In More Colors: Juliet Formal High Slit Dress

    Fit & Features

    • Lined satin-like woven fabric, slight stretch
    • V-neckline with padded cups
    • Adjustable spaghetti straps
    • Fitted high waist, hidden side pockets
    • Elongated floor-length silhouette with high side slit
    • A-line fit
    • Runs true to size

    Style Number/Barcode: 05002-0896

    Category Name: Long Formal Dresses

    Price: $19.97 $99.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Marleigh Formal Sequin Scroll Dress

    Special Occasion 

    Light up the night with a formal sequin dress that elevates your special evening look. Marleigh features a dazzling damask sequin pattern, a sleeveless V-neckline, supportive padded cups, and spaghetti straps that lead to a cross-back strap design. Her back features a partially open design with tie-back straps. Her slim-fit bodice leads to a flared trumpet hem that brings the drama. Complete the look in this formal long dress with a sphere clutch and rhinestone heels.

    Fit & Features

    • Sleeveless V-neckline
    • Padded cups
    • Spaghetti straps, cross-back design, tie closure
    • Lower back zipper, hook and eye closure
    • High waist, trumpet silhouette
    • Lined mesh fabric, damask sequin pattern
    • Form-hugging fit, minimal stretch
    • Runs true to size

    Style Number/Barcode: 05002-2085

    Category Name: Long Formal Dresses

    Price: $19.97 $99.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Blair Lace-Up A-Line Rhinestone Formal Dress

    Special Occasion

    Draw everyone's eyes in your direction in the stunning and glamorous Blair rhinestone formal dress with a stunning lace-up back and figure-skimming A-line silhouette!

    Fit & Features

    • Sheer mesh fabric, full knit lining, moderate stretch
    • Sleeveless V-neckline, spaghetti straps
    • Open back, lace-up strappy design, tie closure
    • Floor-length hem, A-line silhouette
    • All-over rhinestone embellishments, taper off toward the hem
    • Runs true to size 

     

    Where to Wear: 

    Prom, red-carpet events, big birthday parties, glam functions, fancy cocktail soirees

    Style Number/Barcode: 05002-2910

    Category Name: Long Formal Dresses

    Price: $19.97 $99.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Anisley Strapless High Slit Column Formal Dress

    Special Occasion

    Sweeping everyone off their feet is easy in the Ainsley formal dress as a striking bridesmaid, wedding, or gala guest! The strapless neckline and column silhouette create a sophisticated look, while the pleated side seams add a touch of texture. The high side slit and floor-length hem provide an alluring twist, perfect for any formal occasion.

    Unapologetically bold, this dress is all about confidence. Keep the luxe look going with our stunning strapless prom dresses or discover the perfect fit among our stylish wedding guest dresses.

    Fit & Features

    • Slinky knit fabric, short stretchy knit lining
    • Strapless straight neckline
    • Side pleated seams
    • High side slit
    • Floor-length column silhouette
    • Runs true to size

     

    Where to Wear:

    Weddings, bridesmaids, galas, and formal birthday celebrations.

    Style Number/Barcode: 05002-8657

    Category Name: Long Formal Dresses

    Price: $59.90

    Availability: In Stock

    Available Color: WINE, OLIVE, NAVY, BLACK, DARK, MARSALA

    Available Size: XS, S, M, L, XL

  • Gianna Strapless High-Slit Satin Dress

    Special Occasion

    Create an effortlessly captivating look in the Gianna sleek satin formal dress. She features a strapless subtle sweetheart neckline, a wrap-front design at the bodice, a flattering high waist, and a floor-length fitted silhouette with a sultry thigh-high front slit. Complete your outfit with a radiant rhinestone necklace and strappy heels for an unforgettable look.

    Fit & Features

    • Strapless sweetheart neckline
    • Strapless or adhesive bra recommended
    • Wrap-front design at the bodice, pleated detailing
    • Boning detailing to provide structure
    • Back zipper, hook and eye closure
    • High waist seam, floor-length fitted silhouette, high front slit
    • Satin fabric, moderate stretch
    • Runs true to size

    Style Number/Barcode: 05002-1638

    Category Name: Long Formal Dresses

    Price: $29.97 $64.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Evie Formal Ruched Satin Sleeveless Dress

    Special Occasion 

    Make an elegant impression with a formal long dress that captivates from the moment you enter the room! Evie features a sleeveless square neckline, adjustable spaghetti straps, ruching at the waist, and an A-line silhouette accented with a high-side slit. The dress is composed of a satin-like fabric that offers a form-hugging fit with a moderate stretch. Complete the look with rhinestone heels and a matching clutch.

    Fit & Features

    • Sleeveless square neckline, adjustable spaghetti straps
    • Ruching at the waist, back zipper closure
    • A-line silhouette, high side slit
    • Form-hugging fit
    • Satin-knit fabric, knit lining at the bust, moderate stretch
    • Strapless or sticky bra recommended
    • Runs true to size

    Style Number/Barcode: 05002-2026

    Category Name: Long Formal Dresses

    Price: $14.97 $54.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Sienna High-Slit Ruched Formal Dress

    Special Occasion

    Keep your look chic and stunning in the curve-hugging Sienna formal dress. She features a sleeveless cowl neckline, spaghetti straps, a high waist with ruched detailing, and a floor-length mermaid silhouette with a sultry thigh-high front slit. Complete the outfit with rhinestone earrings and strappy heels.

    Fit & Features

    • Sleeveless cowl neckline
    • Spaghetti straps
    • High waist, ruching
    • Fitted floor-length mermaid silhouette
    • Front cinched tie detail, high slit
    • Smooth satin fabric, moderate stretch
    • Runs true to size

    Style Number/Barcode: 05002-1525

    Category Name: Long Formal Dresses

    Price: $14.97 $64.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Eris Formal Sequin Scroll Dress

    Special Occasion

    Walk into the room in a formal dress that brings the glamour to your special event. Eris features a sequin scroll pattern, a one-shoulder neckline with a supportive tank shoulder strap, padded cups that provide additional support, and a slim-fit waist. The waist leads to a floor-length form-hugging silhouette that is accented with a high side slit. The dress is composed of a lined mesh fabric that offers minimal stretch. Complete the look with rhinestone heels and a clutch.

    Fit & Features

    • One-shoulder neckline, tank shoulder strap
    • Padded cups
    • Sequin scroll pattern
    • High waist, back zipper closure
    • Slim-fit form-hugging silhouette, high side slit
    • Lined mesh fabric, minimal stretch
    • Runs true to size

    Style Number/Barcode: 05002-1832

    Category Name: Long Formal Dresses

    Price: $19.97 $89.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Samantha Formal Crepe Slit Dress

    Special Occasion

    Embody classic Old Hollywood glamour in the Samantha formal long dress destined to be your plus one for red-carpet events and cocktail parties! She features an off-the-shoulder, sweetheart neckline with short-sleeve cuffs, and a front-side ruched seam and high-cut slit to accentuate your curves and show some skin along her mermaid silhouette. The formal dress is composed of a stretch crepe-lined fabric. Style with statement earrings and a choker to complete your dressy look!

    Fit & Features

    • Off-the-shoulder, sweetheart neckline
    • Short-sleeve cuffs
    • Front-side ruched seam, high-cut slit
    • Mermaid silhouette
    • Floor-length hem
    • Lined crepe fabric, moderate stretch
    • Strapless or sticky bra recommended
    • Runs true to size

    Style Number/Barcode: 05002-2812

    Category Name: Long Formal Dresses

    Price: $9.97 $59.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Mirabel Satin Corset High Slit Formal Dress

    Special Occasion

    Bring the luxe look with a formal dress that puts you on the A-list! Mirabel features a sleeveless square neckline with pleated detailing, flexible piping at the bodice, spaghetti straps, and a floor-length, curve-hugging silhouette with an alluring high side slit to showcase some leg. The dress is composed of a smooth satin-knit fabric that offers moderate stretch. Complete the look with rhinestone heels and a rhinestone bracelet for your next fancy gala.

    Fit & Features

    • Sleeveless square neckline, pleated detailing
    • Flexible piping at the bodice
    • Spaghetti straps
    • Floor-length hem, form-hugging silhouette
    • Thigh-high side slit
    • Satin-knit fabric, bust lining, moderate stretch
    • Strapless or sticky bra recommended
    • Runs true to size

    Style Number/Barcode: 05002-1382

    Category Name: Long Formal Dresses

    Price: $29.97 $59.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Cindy Beaded Strapless Column Formal Dress

    Special Occasion

    Waltz into the party in the Cindy beaded formal dress for a stunning look! The formal floor-length dress is designed with a strapless cowl neckline that shapes the fitted column silhouette showcasing a high front slit.

    Flawlessly chic and bold, this dress is a statement. If strapless styles are your go-to, explore our strapless prom dresses or embrace effortless fashion with our formal dresses.

    Fit & Features

    • Beaded embellished mesh fabric, stretchy knit lining
    • Strapless cowl neckline, padded bra cups
    • Back zipper with hook-eye closure
    • Column silhouette
    • High front slit
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Prom, weddings, galas, and formal parties.

    Style Number/Barcode: 05002-9077

    Category Name: Long Formal Dresses

    Price: $159.90

    Availability: In Stock

    Available Color: LAVENDER, LIGHT, BLUE, YELLOW, PINK

    Available Size: XS, S, M, L

    Product Badge:
    • Ships Free
  • Shay Formal Lurex Glitter Dress

    Special Occasion 

    Stun in the Shay formal glitter dress that makes your entrance that much more glam! Shay features a mermaid silhouette that flaunts your beautiful curves and a floor-length hem for a hint of drama.

    Fit & Features

    • Line glitter lurex fabric
    • V-neckline, padded bra cups
    • Adjustable spaghetti straps
    • Ruching, mermaid silhouette
    • Wide banded hem, train 
    • Runs true to size
    • Extra glitter for maximum sparkle - may have some natural fallout  


    Where to Wear: 

    Prom, black tie galas and events, red-carpet events, upscale birthdays

    Style Number/Barcode: 05002-2491

    Category Name: Long Formal Dresses

    Price: $124.90

    Availability: In Stock

    Available Color: BLACK, ROSE, GOLD

    Available Size: XS, S

    Product Badge:
    • Ships Free
  • Kehlani Formal Floral Lace Slit Mermaid Dress

    Special Occasion

    Feminine florals bloom all over the Kehlani formal dress - creating a sophisticated yet sexy vibe! The dress boasts a lace-up back that turns heads and a ruched mermaid silhouette that highlights your curves. 

    Fit & Features

    • Floral mesh fabric, stretchy knit lining
    • Sleeveless cowl neckline, spaghetti straps
    • Lace-up back design
    • Front ruched seam, high slit
    • Mermaid silhouette, floor-length hem
    • Runs true to size

     

    Where to Wear:

    School dances, garden parties, weddings, black-tie galas, fancy date nights, birthdays, dinner parties, cocktail soirees, engagement parties, rehearsal dinners

    Style Number/Barcode: 05002-7491

    Category Name: Long Formal Dresses

    Price: $59.90

    Availability: In Stock

    Available Color: RED, MAUVE, LIGHT, BLUE, IVORY, DENIM, SAGE-2, WINE, NAVY, BROWN

    Available Size: XS, S, M, L, XL

  • Heather Ruched High-Slit Formal Dress

    Special Occasion

    All eyes will be on you as you stun in the gorgeous Heather formal dress! She features a sleeveless V-neckline, spaghetti straps that lead to a cross-back lace-up design, back ruched detailing, and a floor-length curve-hugging silhouette with a sexy thigh-high side slit. Style this dress with rhinestone earrings and new heels.

    Fit & Features

    • Sleeveless V-neckline
    • Spaghetti straps
    • Cross-back lace-up design
    • Back ruched detailing
    • Floor-length silhouette, high side slit
    • Form-hugging fit
    • Runs true to size

    Style Number/Barcode: 05002-1333

    Category Name: Long Formal Dresses

    Price: $19.97 $49.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Aliza Backless High Slit Slim-Fit Formal Dress

    Special Occasion

    Make them all do a double-take as you make a glam entrance in the gorgeous Aliza formal dress! She features a sleeveless square neckline, thin tank shoulder straps, an alluring backless design with lower tie-back straps in a chic bow accent, ruching down the side seams, a floor-length hem with a thigh-high side slit to showcase some leg, and a slim-fit silhouette to highlight your figure. The smooth knit fabric offers plenty of stretch. Complete your Prom look with sparkling rhinestone-embellished heels.

    Fit & Features

    • Sleeveless square neckline, thin tank shoulder straps
    • Backless design, lower tie-back straps, bow accent
    • Side ruching, floor-length hem, thigh-high side slit
    • Slim-fit silhouette
    • Smooth knit fabric, knit lining at the bust, plenty of stretch
    • Sticky bra or pasties recommended
    • Runs true to size

    Style Number/Barcode: 05002-8757

    Category Name: Long Formal Dresses

    Price: $14.97 $56.90

    On Sale: Yes

    Availability: In Stock

    Available Color: HUNTER

    Available Size: XS, S, M

    Product Badge:
    • Sale