Square Neckline Bridesmaid Dresses
Square neckline bridesmaid dresses are here to turn your bridal party into an absolute vision—think modern romance with a side of major main character energy. This flattering silhouette brings those “effortlessly chic” vibes that every Windsor girl lives for, letting your squad serve looks from the aisle to the after-party. Whether you’re keeping it classic or making a bold statement, these dresses are ready to hype up your crew and guarantee all eyes stay right where they belong: on you and your ride-or-die besties.
$109.90
A chic navy blue mermaid dress with sequins, featuring a lace-up back and thigh-high slit.
$36.90
A denim satin mini dress with a ruched wrap silhouette and sleeveless square neckline.
$49.90
A black crepe formal dress featuring a sleeveless square neckline and a high-cut front slit.
$59.90
A stunning sage bodycon mini dress with sequin embroidery, halter straps, and an open lace-up back.
$42.90
A wine satin mini dress with rhinestone straps, ruched seams, and a form-hugging silhouette.
$46 $64.90 29% off
A black crepe formal dress with puff sleeves, lace-up back, and a high-cut slit.
$39.90
A chic white glitter lace dress with a bodycon fit, adjustable straps, and asymmetric hem.
$54.90
A green satin midi dress with a corset seam bodice and pleated faux wrap hem.
$49.90
A coral satin mermaid dress featuring a lace-up back, high slit, and adjustable spaghetti straps.
$84.90
A glamorous black glitter knit mermaid dress featuring a bow-back design and floor-length train.
$19.97 $39.90 50% off
A green glitter mesh mini dress with sheer long sleeves and a flattering bodycon silhouette.
$29.97 $54.90 45% off
A chic burgundy formal dress with sheer mesh sleeves, high slit, and curve-hugging silhouette.
$49.90
A black rhinestone-embellished mini dress with adjustable straps and a flattering A-line silhouette.
$20.97 $45.90 54% off
A royal blue satin skater dress with detachable rhinestone straps and a flattering fit-and-flare silhouette.
$77 $109.90 30% off
A royal blue mermaid dress with sequin scrolls, adjustable straps, and a high front slit.
$38.90
A natural lace A-line dress featuring a sleeveless square neckline with a tie for elegant occasions.
$38.90
An ivory mini dress with a pleated bust, spaghetti straps, and an A-line silhouette.
$46 $64.90 29% off
A black taffeta skater dress with a low back bow and elegant square neckline.
$37.90
A navy blue glitter crepe mini dress with a sleeveless square neckline and bodycon silhouette.
$59.90
A sage satin slim-fit formal dress featuring a corset bodice, faux wrap-front, and floor-length hem.
$89.90
A black glitter knit bodycon dress with a cutout underbust and adjustable spaghetti straps.
$35.90
A natural-colored sleeveless wrap mini dress in stretchy knit fabric with a form-hugging fit.
$49.90
A radiant red satin midi dress with a corset bodice, adjustable straps, and a wrap slit.
$42.90
A chambray satin mini dress featuring a pleated square neckline, spaghetti straps, and skater silhouette.
$49.90
A lavender glitter skater dress with sheer peasant sleeves and a fit and flare silhouette.
$19.97 $35.90 44% off
A burgundy bodycon mini dress with a square neckline and stretchy rayon knit fabric.
$79.90
A chic black mermaid dress with a sheer mesh corset bodice and adjustable crisscross straps.
$62.90
A chic black satin knit formal dress featuring a ruched bodice and sultry front slit.
$19.97 $54.90 64% off
A chic black crepe formal dress featuring waist cutouts and a high side slit for allure.
$19.97 $64.90 69% off
A black satin slim fit dress with a ruffled high-side slit and square neckline.
$42.90
A light blue sleeveless skater dress with a ruffled silhouette and sleek square neckline.
$29.97 $69.90 57% off
A burgundy wrap dress with a satin-like finish, high slit, and bow-accented open back.
$76.90
A navy blue mermaid dress with a chiffon tie-back and floral velvet pattern for formal occasions.
$79.90
A glamorous black mermaid dress with glitter knit fabric, open back, and high front slit.
$59.90
A sultry sage mesh formal dress with a square neckline, flexible boning, and a high side slit.
$99.90
A light blue mermaid sequin dress with a cutout back and high slit for formal events.
$49.90
A black crepe mermaid gown with a square neckline, corset bodice, and high front slit.
$19.97 $29.90 33% off
A mauve knit midi dress with a square neckline and form-hugging fit for versatile styling.
$19.97 $34.90 43% off
A sleeveless brown mesh midi dress with an abstract print and curve-hugging bodycon silhouette.
$79.90
A brown satin mermaid dress featuring a square neckline, padded cups, and an alluring open strappy back.
$49.90
A black pleated A-line mini dress with tie straps and a flattering square neckline.
$20.97 $45.90 54% off
A green glitter mesh mini dress with ruffled design and bodycon fit for glamorous nights out.
$64.90
A teal mermaid formal dress with an abstract print, lace-up back, and padded bra cups.
$52.90
A white floral A-line midi dress featuring puff short sleeves, a square neckline, and a flirty front slit.
$59.90
A brown mesh mermaid dress featuring ruched seams, adjustable spaghetti straps, and a square neckline.
$49.90
An ivory floral skater dress with a corset bodice and flared hem, perfect for sunny occasions.
$59.90
An effortlessly pretty chiffon midi dress with a floral print, ruffled tiers, and smocked details.
$49.90
A light blue chiffon midi dress with puff sleeves, floral print, and a chic high front slit.
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Chic and glamorous, the Rowena sequin mermaid long dress will stylishly elevate your formal night-out look. With a lace-up strap design and fitted mermaid silhouette with a high slit, you'll deliver stunning style. Fit & FeaturesSheer mesh fabric, knit lining, moderate stretch, embroidered sequin scroll design, Sleeveless square neckline, padded bust, Spaghetti straps, open back, lace-up strap design, tie closure, Lower back zipper with hook and eye closure, High waist seam, Fitted floor-length mermaid silhouette, high front slit, Runs true to size, Where to Wear:Prom, black-tie parties and galas, fancy engagement parties Free Shipping on All Orders Over $75. | Windsor Rowena Sequin Mermaid Dress in Navy Blue | Size: M | Knit Fabric/Mesh Fabric/Sheer Mesh Fabric
Windsor Lola Formal High Slit Glitzy Glitter Dress in Navy Blue
$29.97 $59.90
50% off
Flaunt your glam style in the fabulous Lola high slit glitter dress! She features a trendy cowl neckline with a slim-fit bodice, a floor-sweeping silhouette with a sultry high side slit to elongate your legs, and a form-hugging fit. She is composed of glitzy glitter knit fabric that offers a curve-hugging fit with a moderate stretch. Pair this gorgeous long dress with a sleek ring set to add some glamour to your look for your special occasion. Fit & FeaturesCowl neckline, spaghetti straps, Slim-fit bodice, form-hugging fit, Floor-length silhouette, Thigh-high side slit, Glitter knit fabric, mini-length inner knit lining, moderate stretch, Sticky bra recommended, Runs true to size, The saturation of glitter varies. Glitter may transfer. Free Shipping on All Orders Over $75. | Windsor Lola Formal High Slit Glitzy Glitter Dress in Navy Blue | Size: L | Knit Fabric
Effortlessly elegant, the Sophie glitter knit mermaid dress would be a stunning choice for a formal gala. She features a square neckline, short puff sleeves, a partially open back with a lace-up strappy design for a customized fit, a high waist seam, a floor-length hem, and a mermaid silhouette with a high front slit to showcase your heels. The glitter knit fabric offers a moderate stretch. Complete the look in this long dress with rhinestone statement earrings. Fit & FeaturesSquare neckline, Short puff sleeves, Open back, lace-up strappy design, tie closure, High waist seam, Floor-length hem, mermaid silhouette, front slit, Glitter knit fabric, moderate stretch, Sticky bra or pasties recommended, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Sophie Glitter Knit Mermaid Dress in Navy Blue | Size: S | Knit Fabric/Rhinestone
The Gwendolyn glitter knit bow-back mermaid dress will have you sparkling up the night with a glamorous allure. She features a sleeveless square neckline, a bold backless design, a high waist seam, a chic bow accent at the lower back with a flowy floor-length train, a floor-sweeping hem with a mermaid silhouette, and a form-hugging fit. Style this long dress with a rhinestone clutch for a black-tie wedding. Fit & FeaturesSleeveless square neckline, spaghetti straps, Backless design, high waist seam, Bow-back accent, floor-length train, Floor-sweeping hem, mermaid silhouette, Form-hugging fit, Glitter knit fabric, Sticky bra or pasties recommended, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Gwendolyn Glitter Knit Bow-Back Mermaid Dress in Light Blue | Size: L | Knit Fabric/Rhinestone
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
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 Green | Size: S | Knit Fabric
Make it an elegant entrance in the Priscilla formal satin dress with a curve-hugging mermaid silhouette and floor-sweeping hem for dramatic flair. Fit & FeaturesLined 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. Free Shipping on All Orders Over $75. | Windsor Priscilla Formal Satin Strapless Mermaid Dress in Taupe | Size: M | Satin Fabric
Sleek and sultry, the Kathie formal satin dress is destined to shine at banquets, galas, and black-tie weddings! She features a sophisticated one-shoulder neckline, a wide shoulder strap, a pleated side seam, a mermaid silhouette, and an asymmetrical high front slit along her graceful long hem. The formal dress is composed of luxurious satin-lined fabric with a sheen effect and minimal stretch. Complete the look with hoop earrings. Fit & FeaturesOne-shoulder neckline, wide shoulder strap, Back zipper and hook-eye closure, Pleated side seam, asymmetrical high front slit, Mermaid silhouette, long hem, Lined silky satin fabric, sheen effect, minimal stretch, Strapless bra or pasties recommended, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Kathie Formal Satin One-Shoulder Dress in Gold-2 | Size: M | Satin Fabric
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 & FeaturesLine 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 Free Shipping on All Orders Over $75. | Windsor Shay Formal Lurex Glitter Dress in Rose Gold | Size: XS
Radiate sexy elegance in the Deyna formal long dress perfect for your upcoming black tie soirees! The dress accentuates your curves with side ruched seams and mermaid silhouette create a stunning and flattering shape, while the floor-length hem adds sophistication. Fit & FeaturesAiry mesh fabric, full knit stretchy lining, Off-the-shoulder neckline, ruffled cuffs, cascading ruffles, Back zipper and hook-eye closure, Flexible boning inserts in the bodice, Side ruched seams, mermaid silhouette, floor-length hem, Runs true to size, Where to Wear:Prom, weddings, fancy garden parties, and dressed-up events. Free Shipping on All Orders Over $75. | Windsor Deyna Formal Mesh Off-The-Shoulder Long Dress in Periwinkle | Size: L | Knit Fabric/Mesh Fabric/Mesh Fabric
Square Neckline Bridesmaid Dresses
When you’re deep in group chat mode with your bridal squad, plotting color palettes and swapping inspo pics, there’s always that one neckline that keeps popping up: the square neck. It’s the ultimate bestie move for bridesmaid dresses—universally flattering, a little bit retro, and just the right amount of modern. Whether you’re styling your closest crew for a rooftop ceremony, a chic garden party, or a candlelit ballroom bash, square neckline bridesmaid dresses are all about serving timeless elegance with a side of “wow, who is she?” They frame the collarbone in a way that feels both classic and fresh, letting you layer up with statement jewelry or keep it minimal for that clean, sophisticated vibe. And let’s be honest, the group photos? Chef’s kiss. Everyone looks snatched, confident, and coordinated, no matter if your team is rocking matching hues or mixing it up with different shades and textures.
Picking out the perfect square neckline bridesmaid dress is all about balancing comfort, style, and those little details that make each girl feel like the main character. You want a fit that lets you hit the dance floor without a care, fabric that holds up through happy tears and champagne toasts, and a silhouette that flatters every body type in the squad. Think about the little touches—adjustable straps for personalized support, hidden zippers for seamless changes, and luxe linings that feel soft against the skin. These are the dresses that go from ceremony to after-party without missing a beat, letting your girls shine in every candid and TikTok-worthy twirl. And if you’re the kind of bride who loves to break the rules, mixing square necklines with other styles like off-the-shoulder or even something from the Strapless Bridesmaid Dresses collection can create a bridal lineup that’s anything but basic. It’s the kind of look that says, “We showed up—and we understood the assignment.”
Whether you’re shopping for yourself as a bridesmaid, curating a look as the bride, or even picking out a dress as a maid of honor who’s ready to slay her speech, square neckline bridesmaid dresses are that rare combo of comfort, confidence, and pure main character energy. They make for unforgettable gifts, too—think about surprising your bestie with a dress she’ll actually want to wear again. Picture her slipping it on for a fancy dinner or a glam night out, reliving those epic wedding memories every time she zips it up. With the right accessories, these dresses can be styled up or down, making them a wardrobe MVP long after the last slice of cake is gone. Every detail, from the perfect fit to the way the neckline frames your face, is designed to make you feel like your most vibrant, fearless self. Because when the big day finally arrives, you deserve to step out with a little extra sparkle and a lot of bestie energy—ready to celebrate love, friendship, and all the unforgettable moments in between.