Mermaid Dresses

Mermaid Dresses with a Signature Flared Silhouette

Mermaid Dresses are made for entrances, pairing a curve-hugging fit with a dramatic flare at or around the knee. The silhouette brings instant shape to special-occasion dressing, whether your style leans romantic, glamorous, or a little more playful. From fall celebrations to formal holiday events and New Year’s Eve, these dresses put the focus on a defined silhouette with movement at the hem.

Mermaid Gowns with Drama in the Details

The fitted-to-flared shape is only the beginning. Corset bodices can add structure, while draping, ruching, wrap fronts, bows, and high slits give mermaid gowns different personalities. Open backs and hardware accents like pearls or rhinestones can bring even more impact to floor-length styles.

Necklines also change the effect of dresses with mermaid silhouettes. Off-shoulder and sweetheart designs lean romantic, while halter, plunge, cowl-neck, spaghetti-strap, and strapless styles can take the silhouette in a sleeker or more alluring direction. For an even more dramatic formal shape, explore ball gowns.

Mermaid Dresses for Formal Celebrations

Mermaid silhouettes naturally suit occasions where dressing up is part of the experience. For weddings, long bridesmaid dresses with fitted shapes can create an elegant bridal-party look, while floor-length mermaid styles bring drama to formal celebrations, holiday events, and New Year’s Eve.

For an elevated take on statement dressing, explore Windsor's Luxe Dress Collection with elevated details that are a statement. Or discover more women's dresses when you want to compare mermaid silhouettes with other fits.

Mermaid Dresses Made for Photo-Worthy Moments

The signature fitted shape and dramatic flared hem of a mermaid dress can look especially striking in photos, making the silhouette a standout for engagement shoots, wedding portraits, anniversaries, birthdays, and other milestone moments. Draping, bows, open backs, slits, and sparkling details can add even more interest from different angles—so find your light, strike a pose, and make the moment yours.

Love how you styled your Windsor mermaid dress? Share your look and tag @windsorstore on your favorite social platform for a chance to be featured on our website.

What Is a Mermaid Dress?

A mermaid dress is fitted through the bodice and hips before flaring at or around the knee, creating the shape associated with a mermaid tail. The close fit through the upper portion of the dress distinguishes the silhouette from styles that begin to flare higher on the body.

Windsor’s mermaid dresses range from sleek and curve-hugging to more dramatic designs with corset bodices, ruching, open backs, slits, draping, and statement details.

Are Mermaid Dresses Formal?

Mermaid dresses are often associated with formal occasions because the fitted silhouette and dramatic floor-length flare create an elevated look. Mermaid gowns can work especially well for formal weddings, galas, holiday celebrations, and other events where a statement dress fits the dress code.

The silhouette can also work for semi-formal occasions depending on the length, fabrication, and details. When choosing your dress, consider the invitation and venue along with how dramatic you want the overall look to feel.

Find Windsor’s Mermaid Dresses for fall and winter celebrations, with fitted silhouettes, dramatic flared hems, and statement details designed for memorable occasions.

  • Morgan Plunge Cowl Neck Mermaid Formal Dress

    Special Occasion

    A gown made for the spotlight, the Morgan gown drapes beautifully with a plunge cowl neckline and fluid mermaid fit. The burnout velvet pattern adds a touch of texture and intrigue, catching the light with every turn for a look that’s both sultry and sophisticated.

    Fit & Features

    • Burnout velvet pattern, knit-lined fabric
    • Plunge cowl neckline
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Black-tie galas, weddings, fancy celebrations, rehearsal dinners, engagement parties, upscale birthdays, red-carpet events, anniversarys

    Style Number/Barcode: 05002-000342

    Category Name: Mermaid Dresses

    Price: $69.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Riley Glitter Ruffle Slit Mermaid Formal Dress

    Special Occasion

    Glide through the night in the Riley glitter knit gown, detailed with a rosette accent and cascading ruffle slit that adds movement with every step. The strappy open back and curve-hugging silhouette make it equal parts timeless and daring.

    Fit & Features

    • Glitter knit stretch fabric
    • Cowl neckline
    • Dual spaghetti straps, strappy back detail
    • High front ruffled trim slit and rosette insert
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Homecoming, weddings, black tie galas, rehearsal dinners, engagement parties, milestone celebrations, fancy birthdays, date nights, red-carpet occasions

    Style Number/Barcode: 05002-000350

    Category Name: Mermaid Dresses

    Price: $64.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Elina Halter Cutout Mermaid Dress

    Special Occasion

    Made for unforgettable entrances, the Elina halter mermaid dress stuns with a keyhole cutout and an open back that flows into a sleek, sculpted silhouette. The slinky knit flatters every curve with effortless sophistication.

    Fit & Features

    • Slinky knit fabric, high stretch
    • Sleeveless twisted halter neckline, keyhole cutout
    • Tie-back halter straps
    • Open back, lower twist-back design
    • Ruching
    • Floor-length mermaid silhouette
    • Runs true to size

     

    Where to Wear:

    Weddings, bridesmaids, black-tie parties, dressed-up dinners, red-carpet events, galas, and formal affairs.

    Style Number/Barcode: 05002-000348

    Category Name: Mermaid Dresses

    Price: $59.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Coastal Luxe Floral Mermaid Maxi Dress

    This floral maxi dress is soft, stunning, and just a little mysterious. The dreamy drape and floral mesh give off major “walking through a field of wildflowers” energy.

    Fit & Features

    • Floral print, mesh lined fabric
    • Cowl square neckline
    • Spaghetti straps
    • Mermaid silhouette
    • Maxi-length hem
    • Runs true to size

    Style Number/Barcode: 05101-000582

    Category Name: Mermaid Dresses

    Price: $9.97 $49.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Kenley Velvet One-Shoulder Mermaid Formal Dress

    Special Occasion

    A showstopper in every sense, The Kenley formal dress blends soft velvet with sculptural elegance. Its one-shoulder neckline, accented by dual adjustable straps, and a daring high front slit bring just the right mix of sophistication and allure—made for the moments that deserve a grand entrance.

    Fit & Features

    • Luxe velvet knit fabric, stretchy knit lining
    • One-shoulder neckline
    • Dual adjustable spaghetti straps
    • High front slit
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Weddings, black-tie galas, formal events and celebrations, candlelit dinners, rehearsal dinners, engagement parties, glam red-carpet occasions, upscale birthdays

    Style Number/Barcode: 05002-000353

    Category Name: Mermaid Dresses

    Price: $69.90

    Availability: In Stock

    Available Color: NAVY

    Available Size: XS, S

  • Lindsey Pearl Cold Shoulder Mermaid Formal Dress

    Special Occasion

    Romantic and ethereal, the Lindsey pearl-embellished gown stuns with an off-the-shoulder mesh sleeve detail and figure-skimming silhouette. The ruched mesh layers create a soft, elegant finish made for unforgettable evenings.

    Fit & Features

    • Faux pearl embellished
    • Mesh fabric lined with stretchy knit
    • Cold shoulder neckline, adjustable spaghetti straps, padded bra cups
    • Fitted sheer long sleeves
    • Back zipper and hook-eye closure
    • Ruched mermaid silhouette, floor-length hem
    • Runs true to size

     

    Where to Wear:

    Weddings, bridal celebrations, engagement photoshoots, rehearsal dinners, formal galas, charity and military balls, red-carpet soirees, milestone celebrations

    Style Number/Barcode: 05002-000354

    Category Name: Mermaid Dresses

    Price: $69.90

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Karly Glitter Slit Mermaid Formal Dress

    Special Occasion

    Bring the sparkle in the Karly glitter knit gown, designed with a draped neckline, body-hugging silhouette, and daring thigh-high slit. A floor-length finish makes it equal parts sultry and sophisticated—the perfect match for any evening affair.

    Fit & Features

    • Glitter knit fabric
    • Cowl neckline
    • Wide shoulder straps
    • High front wrap slit, side pleated seam
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Weddings, black-tie galas, formal celebrations, red-carpet events, nights at the theatre, fancy date nights, military balls

    Style Number/Barcode: 05002-000355

    Category Name: Mermaid Dresses

    Price: $79.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Arial Open Back Mermaid Formal Dress

    Special Occasion

    Made for jaw-dropping arrivals, the Arial formal dress sculpts and stuns in smooth knit with a one-shoulder neckline, ruched detailing, and a striking open back twist. Its mermaid silhouette and floor-length hem bring full-glam drama—no effort required.

    Fit & Features

    • Smooth knit fabric with lining, moderate stretch
    • One-shoulder neckline
    • Side ruched seams
    • Open back with twist detail
    • Mermaid floor-length silhouette
    • Runs true to size

     

    Where to Wear:

    Weddings, black tie galas, rehearsal dinners, engagement parties, anniversaries, formal soirees, nights at the opera or theatre, red carpet occasions

    Style Number/Barcode: 05002-000371

    Category Name: Mermaid Dresses

    Price: $59.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Liana Glitter Mermaid Formal Dress

    Special Occasion

    Effortlessly alluring, the Liana glitter knit gown is designed to catch the light with every move. The cowl neckline, ruched detailing, and sleek floor-length mermaid silhouette make it a timeless yet striking choice.

    Fit & Features

    • Glitter knit lined fabric
    • Cowl neckline
    • Adjustable spaghetti straps
    • Back zipper and hook-eye closure
    • Ruched mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Weddings, black tie galas, fancy date nights, red carpet occasions, engagement parties, rehearsal dinners, opera, red-carpet occasions

    Style Number/Barcode: 05002-000380

    Category Name: Mermaid Dresses

    Price: $19.97 $79.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Debbie Floral Rhinestone Mermaid Formal Dress

    Special Occasion

    Made to dazzle under the lights, the Debbie formal dress pairs rhinestone floral mesh with a sculpted halter plunge neckline and open back for that undeniable wow factor. Its floor-length mermaid silhouette and front slit add graceful movement, made for grand entrances and unforgettable nights.

    Fit & Features

    • Rhinestone floral pattern, mesh-lined fabric
    • Plunge halter neckline, padded bra cups, tie closure
    • Open back, zipper and hook-eye closure
    • High front slit
    • Mermaid silhouette, floor-length hem
    • Runs true to size

     

    Where to Wear:

    Formal celebrations, weddings, black-tie galas, luxe evening soirees, red-carpet events, anniversaries, big birthday events

    Style Number/Barcode: 05002-000376

    Category Name: Mermaid Dresses

    Price: $69.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Danica Lace-Up Mermaid Formal Dress

    Special Occasion

    Bring the drama in the Danica mermaid dress, detailed with a bold floral burnout design and a strappy lace-up back. Its sleek silhouette and delicate sweetheart neckline were made for entrances that turn heads.

    Fit & Features

    • Floral velvet burnout pattern, mesh-lined fabric
    • V-neckline, spaghetti straps
    • Lace-up open back design
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Black tie weddings, galas, charity and military balls, red-carpet soirees, formal celebrations, anniversaries 

    Style Number/Barcode: 05002-000387

    Category Name: Mermaid Dresses

    Price: $59.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Gwyneth Metallic Open Back Mermaid Dress

    Special Occasion

    Crafted to glow from every angle, the Gwyneth metallic mermaid dress sculpts with a ruched sweetheart neckline and dramatic floor-sweeping silhouette. A sleek back cutout with bar strap detail adds just the right edge, along with the high-shine finish—perfect for black-tie nights that call for all-out glamour.

    Fit & Features

    • Foiled metallic knit fabric with full-length knit lining, high stretch
    • Sleeveless sweetheart neckline, ruched center, padded bust
    • Thin tank shoulder straps
    • Back bar strap with hook and bar closure
    • Lower back cutout, ruching with hidden zipper closure
    • Floor-length mermaid silhouette
    • Runs true to size

     

    Where to Wear:

    Black-tie parties, galas, red-carpet events, fancy soirees, and formal affairs.

    Style Number/Barcode: 05002-000466

    Category Name: Mermaid Dresses

    Price: $69.90

    Availability: Out of Stock

    Product Badge:
    • Sale
  • Sofia Glitter Mermaid Formal Dress

    Special Occasion

    Made for those moments when every entrance feels cinematic, the Sofia glitter knit mermaid gown sculpts and shines with undeniable allure. The ruched detailing enhances the curve-hugging silhouette, while delicate straps frame the neckline with timeless elegance.

    Fit & Features

    • Glitter knit fabric
    • Cowl neckline
    • Adjustable spaghetti straps
    • Low-cut back, lower zipper and hook-eye closure
    • Ruched detailing, mermaid silhouette, floor-length hem with train detail
    • Extra glitter for maximum sparkle - may have some natural fallout
    • Runs true to size

     

    Where to Wear:

    Weddings, black tie galas, military balls, big birthday events, milestone celebrations, fancy date nights, red-carpet occasions

    Style Number/Barcode: 05002-000381

    Category Name: Mermaid Dresses

    Price: $79.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Tricia V-Neck Slit Mermaid Formal Dress

    Special Occasion

    Effortless and undeniably chic, the Tricia plunge gown turns heads with a sleek silhouette and daring thigh-high slit. Designed to elongate and flatter, it’s your perfect plus-one for black-tie events, galas, and every moment that calls for pure glamour.

    Fit & Features

    • Smooth knit fabric with stretch
    • Plunge V-neckline, wired insert, padded bra cups
    • Adjustable spaghetti straps 
    • High front slit
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Weddings, black tie galas, engagement parties, rehearsal dinners, milestone celebrations, charity auctions, red-carpet occasions, fancy date nights, military balls

    Style Number/Barcode: 05002-001293

    Category Name: Mermaid Dresses

    Price: $69.90

    Availability: In Stock

    Available Color: SAGE

    Available Size: XS, S, M, L

  • Eliana Rhinestone Mermaid Formal Dress

    Special Occasion

    Made for nights that call for quiet drama and confident polish, the Eliana mesh mermaid gown glimmers with rhinestone embellishments that catch the light with every step. A sleek V-neckline, delicate spaghetti straps, and a high front slit create a silhouette that feels refined, striking, and ready for an event.

    Fit & Features

    • Rhinestone-embellished, mesh-lined fabric with stretch
    • V-neckline with adjustable spaghetti straps
    • Mermaid silhouette
    • Front slit design
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Black tie galas, weddings, formal birthday dinners, milestone celebrations, upscale New Year's Eve parties, special occasions, red-carpet events, dressy nights out

    Style Number/Barcode: 05002-000394

    Category Name: Mermaid Dresses

    Price: $39.97 $89.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Kasey Rhinestone Plunge Mermaid Formal Dress

    Special Occasion

    Designed to shimmer with every step, the Kasey rhinestone embellished mesh gown delivers sleek drama with a polished finish. The plunge strapless neckline with a sheer mesh insert and sculpted mermaid silhouette creates a look that feels powerful, refined, and undeniably striking.

    Fit & Features

    • Rhinestone embellishments, mesh-lined fabric
    • Strapless sweetheart neckline
    • Structured bodice with sheer mesh plunge inset
    • Back zipper and hook-eye closure
    • Mermaid floor-length silhouette
    • Back slit for ease of movement
    • Runs true to size

    Where to Wear:

    Black-tie weddings, formal evening ceremonies, glamorous galas, red-carpet events, luxury hotel ballrooms, upscale charity events, formal celebrations, elegant receptions

    Style Number/Barcode: 05002-000395

    Category Name: Mermaid Dresses

    Price: $99.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Brooklyn Mesh Strapless Mermaid Formal Dress

    Special Occasion

    Designed for unforgettable entrances, the Brooklyn mesh mermaid gown features a structured sweetheart bodice with flexible boning for support and a draped waist accent that sculpts the silhouette. A high slit adds movement and allure to its floor-length finish.

    Fit & Features

    • Mesh fabric lined with stretch knit
    • Strapless sweetheart neckline, padded bra cups
    • Flexible boning inserts, draped waist accent
    • Back zipper and hook-eye closure
    • High front slit
    • Mermaid silhouette, floor-length hem
    • Runs true to size

     

    Where to Wear:

    Black-tie galas, weddings, red-carpet events, formal celebrations, rehearsal dinners, engagement parties

    Style Number/Barcode: 05002-000398

    Category Name: Mermaid Dresses

    Price: $69.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Diana Glitter Leopard Mermaid Formal Dress

    Special Occasion

    For the woman who never blends in, the Diana formal dress is made to command the room. Crafted from luxe glitter knit with a sultry leopard pattern, this halter v-neck gown flows into a mermaid silhouette that hugs and highlights every curve—finished with an open back that turns every exit into an encore.

    Fit & Features

    • Leopard pattern, glitter knit fabric, stretchy knit lining
    • Halter V-neckline, padded bra cups, tie closure
    • Open back design
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Black-tie gala, weddings, formal celebrations, red-carpet occasions, high-end cocktail party, industry events, award banquets, rehearsal dinners, art gallery openings

    Style Number/Barcode: 05002-000399

    Category Name: Mermaid Dresses

    Price: $69.90

    Availability: In Stock

    Available Color: BLACK

    Available Size: XS, S

  • Selena Glitter Slit Mermaid Formal Dress

    Special Occasion

    Designed for the spotlight, the Selena formal dress shimmers with understated allure. Crafted in glitter knit with a ruched bodice and sleek mermaid silhouette, this piece features a square neckline and thigh-high slit, balancing timeless elegance with sparkle.

    Fit & Features

    • Glitter knit-lined fabric, moderate stretch
    • Square neckline
    • Adjustable spaghetti straps, back zipper and hook-eye closure
    • High front slit
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Formal weddings, evening galas, holiday celebrations, special occasion soirees, black-tie dinners, upscale milestone events

    Style Number/Barcode: 05002-000407

    Category Name: Mermaid Dresses

    Price: $79.90

    Availability: In Stock

    Available Color: BLACK

    Available Size: XS, S

    Product Badge:
    • Ships Free
  • Margot Glitter One Shoulder Mermaid Formal Dress

    Special Occasion

    The Margot dress is designed for evenings that call for polished drama and effortless confidence. A glitter knit fabric shapes a sleek mermaid silhouette, finished with a one-shoulder neckline accented by hardware and a high side slit that moves beautifully with every step.

    Fit & Features

    • Glitter knit fabric
    • One-shoulder neckline with double strap detail
    • Back zipper and hook-eye closure
    • Fitted bodice with gathered construction
    • Defined waist seam
    • Mermaid silhouette with front slit
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Weddings, black tie receptions, evening galas, upscale cocktail parties, fashion-forward dinner parties, anniversaries, holiday events, red-carpet occasions, winter formals

    Style Number/Barcode: 05002-000408

    Category Name: Mermaid Dresses

    Price: $19.97 $69.90

    On Sale: Yes

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Lyra Rhinestone Mesh Cowl Neck Formal Dress

    Special Occasion

    Shimmer and shine in the Lyra rhinestone mesh gown, designed with a draped cowl neckline, strappy open back, and curve-hugging mermaid silhouette. A daring high slit adds the perfect touch of drama for your most glamorous nights.

    Fit & Features

    • Rhinestone-embellished, mesh-lined fabric, moderate stretch
    • Draped cowl neckline
    • Adjustable spaghetti straps
    • Open strappy back, lower ruched seam
    • High front slit
    • Mermaid silhouette, floor-length hem
    • Runs true to size

     

    Where to Wear:

    Black-tie weddings, formal galas, red-carpet events, formal dances, holiday soirees, luxury dinners, milestone celebrations, big birthday events

    Style Number/Barcode: 05002-000411

    Category Name: Mermaid Dresses

    Price: $79.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Donna Lace Ruffled Mermaid Formal Dress

    Special Occasion

    Romantic with a touch of drama, The Donna formal dress was made for unforgettable entrances. Crafted from delicate lace in a curve-hugging mermaid silhouette, this gown stuns with a deep V-neckline and cascading ruffle along the high front slit—soft, striking, and made to move beautifully with you.

    Fit & Features

    • Lace-lined stretchy fabric
    • V-neckline, padded bra cups
    • Spaghetti strap tie
    • High front ruffled slit
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear: 

    Weddings, black tie galas, engagement parties, rehearsal dinners, formal celebrations, red-carpet events, anniversaries

    Style Number/Barcode: 05002-000421

    Category Name: Mermaid Dresses

    Price: $64.90

    Availability: Out of Stock

    Product Badge:
    • Ships Free
  • Maribeth Glitter Strappy Back Mermaid Formal Dress

    Special Occasion

    Sleek, sultry, and made to shine—the Maribeth glitter knit gown pairs a plunging halter neckline with daring back cutouts. The curve-hugging silhouette and floor-sweeping hem promise a show-stopping entrance at every occasion.

    Fit & Features

    • Glitter knit fabric lined with stretchy knit
    • Plunge Halter neckline with tie closure
    • Open strappy back
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Weddings, black tie galas, military balls, nights at the opera, elegant milestone celebrations, big birthday events, red-carpet occasions

    Style Number/Barcode: 05002-000420

    Category Name: Mermaid Dresses

    Price: $59.90

    Availability: In Stock

    Available Color: BLACK, RED

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

  • Bailey Glitter Low Back Mermaid Formal Dress

    Special Occasion

    Sleek and radiant, the Bailey glitter knit gown contours your figure with a curve-hugging silhouette and plunging neckline. The open back with ring detail adds just the right amount of edge to its timelessly glamorous finish.

    Fit & Features

    • Glitter knit-lined fabric with stretch
    • Sweetheart neckline, wide shoulder straps
    • Open back with hardware insert trim
    • Mermaid silhouette
    • Floor-length hem
    • Runs true to size

     

    Where to Wear:

    Weddings, black tie galas, red-carpet occasions, formal milestone celebrations, engagement parties, fancy date nights

    Style Number/Barcode: 05002-001127

    Category Name: Mermaid Dresses

    Price: $64.90

    Availability: In Stock

    Available Color: WINE

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