Blue Semi Formal Dresses

Ready to turn heads and steal the spotlight? Blue semi formal dresses are your ticket to main character energy, whether you’re owning the dance floor, making an entrance at a dinner party, or just living your best life. From deep navy to dreamy sky hues, these dresses bring all the confidence and cool-girl vibes you need to make every moment unforgettable. Go ahead—pick your fave blue semi formal dress and let your bold side shine.

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$59.90

4.560748 star rating

A navy blue satin wrap midi dress with a cowl neckline and adjustable spaghetti straps.

$109.90 - $149.90

4.568182 star rating

A light blue mermaid dress with sequin-scroll mesh, padded bust, and lace-up back for formal events.

$44.90

4.637681 star rating

A glamorous blue satin skater dress featuring a lace-up back and adjustable spaghetti straps.

$79.90

4.773585 star rating

A light blue mini dress with faux pearl embellishments, featuring a cowl neckline and open-back design.

Sale

$29.97 $59.90 50% off

4.490566 star rating

A navy blue satin midi dress with a pleated cowl neckline and high side slit.

$84.90

4.673077 star rating

A stunning navy blue satin formal dress featuring a lace-up back and high-cut front slit.

$47.90

4.558139 star rating

A lustrous blue satin skater dress with a sleeveless cowl neckline and spaghetti straps.

$59.90

4.675 star rating

A stunning royal blue satin dress with a corset bodice and high side slit for formal events.

Sale

$19.97 $74.90 73% off

4.351351 star rating

A navy blue glitter knit mermaid dress with a square neckline and lace-up open back.

$109.90

4.666667 star rating

An elegant navy blue satin gown with a cold shoulder design and sultry front slit.

Sale

$39.97 $79.90 50% off

4.833334 star rating

A light blue mesh mermaid gown with faux pearl embellishments and a flattering sweetheart cowl neckline.

$69.90

4.588235 star rating

A navy blue mermaid dress with a cowl neckline, crisscross back, and dramatic high front slit.

$59.90

4.8125 star rating

A navy blue strapless column dress in slinky knit fabric with pleated seams and a high side slit.

$99.90

4.5 star rating

A light blue bodycon dress with sequin-scroll pattern, draped beading, and adjustable spaghetti straps.

$64.90

4.8125 star rating

A navy blue satin bodycon dress featuring a corset bodice and asymmetrical wrap hem.

$89.90

4.25 star rating

A glamorous light blue mermaid dress with glitter knit fabric, ruching, and a stylish back cutout.

$159.90

4.866667 star rating

A light blue strapless formal dress with beaded mesh, cowl neckline, and high front slit.

Sale

$77 $109.90 30% off

4.461538 star rating

A royal blue mermaid dress with sequin scrolls, adjustable straps, and a high front slit.

Sale

$19.97 $69.90 71% off

4.461538 star rating

A navy blue satin glitter mermaid dress with a strapless neckline and pleated bodice.

$59.90

4.416667 star rating

A navy blue satin formal dress featuring a halter neckline, open back, and high front slit.

$59.90

4.75 star rating

A navy blue slinky knit mermaid dress featuring a sweetheart neckline, cowl draping, and high front slit.

$129.90

4.727273 star rating

An elegant navy blue ball gown featuring romantic ruffles, airy tulle, and a flattering A-line silhouette.

$44.90

4.545455 star rating

A blue glitter knit mini dress featuring a pleated cowl neckline, faux wrap front, and bodycon fit.

$64.90

4.1 star rating

A royal blue satin dress with a lace-up back, V-neckline, and high front slit.

$79.90

4.333334 star rating

A navy blue mermaid formal dress featuring a lace open back and side ruched seams.

$69.90

4.25 star rating

A navy blue mermaid dress with a strappy open back and sleek, stretchy knit fabric.

$79.90

4.75 star rating

A navy blue mermaid dress with a glittery finish, lace-up back, and high front slit.

$79.90

4.571429 star rating

A royal blue satin mermaid dress with a strappy open back and high front slit.

$64.90

5 star rating

A royal blue formal dress with a V-neckline, strappy back, and high side slit.

$79.90

4.571429 star rating

A navy blue mesh mermaid dress adorned with colored rhinestones and faux pearls for elegant formal occasions.

Sale

$19.97 $64.90 69% off

4.428571 star rating

A light blue mermaid dress with glitter, lace-up back, and high front wrap slit for formal events.

$69.90

4.857143 star rating

A captivating blue mermaid dress featuring glitter fabric, an open back, and a sweetheart neckline.

$46.90

5 star rating

A dazzling navy blue mini dress with rhinestones, cowl V-neckline, and adjustable spaghetti straps.

$99.90

4.6 star rating

A light blue mermaid dress with sequin embroidery, cutout back, and high front slit.

Sale

$19.97 $99.90 80% off

4.6 star rating

A navy blue mermaid gown with glitter knit fabric, cowl neckline, and adjustable spaghetti straps.

$69.90

4.4 star rating

An enchanting light blue tulle A-line dress with a corset bodice and high front slit.

$69.90

5 star rating

A blue floral crepe mermaid dress with a sweetheart neckline and high front slit.

$99.90

4.6 star rating

A stunning light blue formal dress with rhinestone embellishments, featuring a strapless neckline and cowl back.

$64.90

4.8 star rating

A navy blue knit mermaid dress featuring a cowl neckline, spaghetti straps, and an open tie-back design.

$119.90

4.2 star rating

A royal blue A-line formal dress with a lace-up back, high slit, and hidden pockets.

$76.90

4.75 star rating

A navy blue mermaid formal dress featuring a chiffon tie-back and floral velvet pattern.

$54.90

5 star rating

A royal blue glitter velvet midi dress with a V-neckline, padded bust, and pleated wrap bodice.

$99.90

4.5 star rating

A romantic blue midi dress with a sweetheart neckline and floral garden print on organza fabric.

$89.90

4.75 star rating

A sophisticated navy blue satin dress with a strapless neckline and pleated mermaid silhouette.

$119.90

4.75 star rating

An iridescent light blue mesh mermaid dress featuring sequin embroidery, lace-up back, and a dramatic train.

$119.90

4.75 star rating

A light blue sequin mermaid dress with a lace-up back and high front slit.

$119.90

5 star rating

A royal blue mermaid dress with sequin embroidery, lace-up back, and high front slit.

$139.90

5 star rating

A light blue floral mesh dress with ruffles, sheer corset bodice, and adjustable spaghetti straps.

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Windsor Cheyenne Formal One-Shoulder Velvet Dress in Black-2
(121) 4.8099174 star rating

Lavish yourself with a luxe formal dress that elevates your special occasion outfit! Cheyenne features a one-shoulder neckline, a wired V-neck bust, a fitted long sleeve, a high side slit on the floor-length hem, and a curve-hugging A-line silhouette. The long dress is composed of a lined velvet fabric that offers a moderate stretch. Complete the look with rhinestone heels and a sphere clutch. Fit & FeaturesOne-shoulder neckline, wired V-neck bust, Fitted long sleeve, High side slit, floor-length hem, A-line silhouette, Lined velvet fabric, Form-hugging fit, moderate stretch, Strapless or sticky bra recommended, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Cheyenne Formal One-Shoulder Velvet Dress in Black-2 | Size: XS | Rhinestone/Velvet Fabric

Windsor Jamie Lace-Up Satin Formal Column Dress in Red
(70) 4.785714 star rating

Dare to stun in the Jamie satin formal dress crafted with silky satin fabric for a gorgeous sheen. The bold plunge halter neckline and open lace-up back will turn heads while the fitted column silhouette flaunts your curves. Fit & FeaturesSilky satin fabric, short knit stretchy lining, Plunge halter V-neckline, shoulder straps, padded bra cups, Lace-up open back, lower zipper with hook-eye closure, High side slit, Fitted column silhouette, Floor-length hem, Runs true to size, Where to Wear:Prom, weddings, galas, and black-tie soirees. Free Shipping on All Orders Over $75. | Windsor Jamie Lace-Up Satin Formal Column Dress in Red | Size: XS | Knit Fabric/Satin Fabric

Marjorie Formal Chiffon Sleeve Midi Dress in White
(42) 4.571429 star rating

Sophistication meets sultry on the Marjorie formal dress perfect for cocktail parties and dressy family get-togethers. She features sheer chiffon peasant long sleeves, a square neckline, a bodycon silhouette, and a front ruched seam leading to the skin-flaunting slit along her midi-length hem. The formal dress is composed of a lined crepe fabric with a moderate stretch. Style with a chic clutch and heels to complete the look! Fit & FeaturesSheer chiffon peasant long sleeves, square neckline, Front ruched seam, slit detail, Bodycon silhouette, Midi-length hem, Lined crepe fabric, moderate stretch, Bra-friendly design, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Marjorie Formal Chiffon Sleeve Midi Dress in White | Size: XL | Chiffon/Crepe Fabric

Windsor Chic Staple Ribbed Knit Skater Dress in Pink
Sale
(39) 4.6923075 star rating

A chic staple skater dress featuring a flirty off-the-shoulder folded neckline and a short-length perfect for styling with boots or heels. Fit & FeaturesRibbed knit fabric with plenty of stretch, Off-the-shoulder neckline, fold-over accent, Long fitted sleeves, Short-length hem, Skater silhouette, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Chic Staple Ribbed Knit Skater Dress in Pink | Size: S | Knit Fabric

Gwendolyn Glitter Knit Bow-Back Mermaid Dress in Pink
(36) 4.5833335 star rating

The Gwendolyn glitter knit bow-back mermaid dress will have you sparkling up the night with a glamorous allure! Make your entrance in this floor-length gown designed to turn heads with a curve-flaunting mermaid fit and backless design. Fit & FeaturesGlitter knit fabric, moderate stretch, Square neckline, spaghetti straps, Backless design, high waist seam, Bow-back accent, floor-length train, Floor-sweeping hem, mermaid silhouette, Runs true to size, Extra glitter for maximum sparkle - may have some natural fallout, Where to Wear:Weddings, black tie galas, formal dances, big birthday events, rehearsal dinners, engagement parties, red carpet occasions, upscale glam parties Free Shipping on All Orders Over $75. | Windsor Gwendolyn Glitter Knit Bow-Back Mermaid Dress in Pink | Size: S | Knit Fabric

Windsor Saige Formal Sequin Lace-Up Mermaid Dress in Lavender
(34) 4.7352943 star rating

A sparkling sequin scroll pattern adds beauty and shine to the glamorous Saige formal long dress! With a lace-up back that turns heads, a curve-hugging mermaid silhouette, and a high slit for a gorgeous look. Fit & FeaturesSequin scroll pattern, mesh fabric, stretchy full knit lining, Sleeveless plunge V-neckline, padded bust, Spaghetti straps, open lace-up back detail, Back zipper and hook-eye closure, Mermaid silhouette, floor-length hem, Runs true to size, Where to Wear:Prom, black-tie events, glam functions, and parties. Free Shipping on All Orders Over $75. | Windsor Saige Formal Sequin Lace-Up Mermaid Dress in Lavender | Size: XS | Knit Fabric/Mesh Fabric/Mesh Fabric

Chandler Strapless Lace-Up Sequin Formal Dress in Neon Orange
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(31) 4.612903 star rating

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. Fit & FeaturesSheer 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. Free Shipping on All Orders Over $75. | Windsor Chandler Strapless Lace-Up Sequin Formal Dress in Neon Orange | Size: S | Knit Fabric/Mesh Fabric/Sheer Mesh Fabric

Lucille Formal Satin Mermaid Dress in Coral
(29) 4.827586 star rating

The Lucille formal satin dress will have you looking and feeling radiant and luxe! The dress captivates with a lace-up back, mermaid silhouette, and high front slit for effortless allure. Fit & FeaturesLined satin knit fabric, minimal stretch, Sleeveless square neckline, padded bust, adjustable spaghetti straps, Open lace-up back design, zipper and hook-eye closure, Fitted bodice, front ruched seam, high-cut slit, Mermaid silhouette, floor-length hem, Runs true to size, Where to Wear:Prom, weddings, bridesmaids, black tie galas, red-carpet events, nights at the opera or theatre, big milestone celebrations Free Shipping on All Orders Over $75. | Windsor Lucille Formal Satin Mermaid Dress in Coral | Size: L | Knit Fabric/Satin Fabric

Marylou Lace Mesh Plunge Neck Formal Dress in Black
(26) 4.8076925 star rating

Bring the romantic allure to the evening affair in the Marylou lace mesh plunge formal dress! She embodies flirtatious style in a sleeveless plunge V-neckline with a built-in padded bust and adjustable spaghetti straps on her empire waist bodice. The sparkly embroidered lace mesh fabric effortlessly flows into a floor-length silhouette with a high-side slit to showcase some legs. She also features a curve-conscious silhouette to flaunt your stunning figure! Complete the look in an elegant hair clip. Fit & FeaturesPlunge V-neckline, adjustable spaghetti straps, Adhesive bra recommended, built-in padded bust, High side slit, back zipper, hook and eye closure, Empire waist, form-fitting silhouette, Floor-length hem, Sparkly embroidered lace mesh fabric, full knit lining, moderate stretch, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Marylou Lace Mesh Plunge Neck Formal Dress in Black | Size: L | Knit Fabric/Mesh Fabric/Mesh Fabric

Alicia Off-The-Shoulder Mermaid Formal Dress in Brown
(25) 4.84 star rating

Spend an evening in the timeless elegance of the Alicia floor-length formal dress and feel like a work of art! The side ruched seams accentuate your curves along the mermaid silhouette, and the high front slit adds a touch of drama to the floor-length hem. Fit & FeaturesSmooth knit fabric lined with stretchy knit, Padded bra cups, Back zipper and hook-eye closure, High front slit, Mermaid silhouette, Runs true to size, Where to Wear:Prom, galas, black tie parties, weddings, bridesmaids, nights at the theatre and opera, red-carpets Free Shipping on All Orders Over $75. | Windsor Alicia Off-The-Shoulder Mermaid Formal Dress in Brown | Size: M | Knit Fabric

Blue Semi Formal Dresses

When the dress code says “semi formal” but your vibe is anything but basic, blue semi formal dresses for women are the ultimate move. There’s just something about slipping into a blue dress that instantly makes you feel like the main character—think midnight blue for that mysterious, starry-night allure, or a dreamy sky blue that’s pure sunshine and compliments. Whether you’re heading to a wedding, a swanky dinner, or that invite-only rooftop party, blue brings the perfect blend of bold and classic. It’s the color that goes with every mood, every skin tone, and every “I want to stand out without trying too hard” moment. And let’s be real: blue is the color that looks just as fire in the group pics as it does in your solo mirror selfies. Windsor semi formal dresses are designed for those who want to walk in and own the room, no apologies necessary. The right blue dress isn’t just an outfit—it’s your hype squad, your confidence boost, and your secret weapon for making memories that’ll have everyone talking.

Shopping for blue semi formal dresses for women is kind of like picking your own adventure. Maybe you’re the girl who loves a classic silhouette with a twist—think a little ruching here, a daring slit there, or a back detail that’s just waiting for a double-take. Or maybe you’re all about those unexpected textures: satin that catches the light just right, or mesh and lace that give off a flirty edge. These dresses are made for every occasion that calls for a little extra effort, but not so much that you can’t dance, laugh, and live your best life. They’re also a killer gift for your bestie who’s got a calendar full of events, or for that sister who always “borrows” your clothes and never gives them back. (We see you, little sisters.) When you’re picking out your dress, think about the details—adjustable straps for the perfect fit, pockets for your phone and lip gloss, and necklines that match your mood. And if your style leans more toward the romantic, don’t sleep on the dreamy vibes of Light Blue Floral Formal Dresses—they’re basically made for twirling under fairy lights.

The best part about blue semi formal dresses is how effortlessly they flex to fit your plans. Got a last-minute invite? Throw on a blazer or a statement necklace and you’re golden. Heading out for a night that might turn into morning? Blue’s got your back, looking fresh from dinner to dance floor and beyond. And if you’re playing the role of Maid of Honor, birthday girl, or just the friend who always brings the fun, these dresses make sure you’re ready for every photo op and every spontaneous adventure. Think of blue as your style safety net—no matter how wild the night gets, you’ll look put together, confident, and totally unforgettable. So go ahead, pick your favorite shade, find your perfect fit, and let your blue dress do the talking. After all, you deserve to feel as bold and beautiful as you truly are, every single time you step out.