Square Neckline Cocktail Dresses
Square neckline cocktail dresses are the ultimate power move for any night out. That bold, straight-across neckline? It’s giving main character energy, and you’re about to steal every spotlight. Whether you’re planning a girls’ night that turns into an adventure or RSVPing “yes” to the party of the year, these dresses bring the perfect mix of flirty and fierce. Slip into a square neckline cocktail dress and get ready to serve confidence with a side of sass—because tonight, you’re rewriting the dress code.
$109.90
A navy blue sequin mermaid dress with a lace-up back and thigh-high front slit.
$79.90
A white taffeta mini dress featuring a detachable bow with a dramatic train for stunning entrances.
$49.90
A black crepe formal dress featuring a sleeveless square neckline and a high-cut front slit.
$44.90
A white midi dress with chiffon sleeves, square neckline, and a ruched bodycon silhouette.
$46 $64.90 29% off
A black crepe formal dress with puff sleeves, lace-up back, and a high-cut slit.
$54.90
An ivory satin midi dress with a corset seam bodice and pleated faux wrap hem.
$76.90
A blush mini party dress with a strapless neckline, glitter fabric, and a dramatic bow train.
$15.97 $54.90 71% off
A burgundy formal dress with sheer mesh, bell sleeves, and a high-side slit for elegant occasions.
$19.97 $109.90 82% off
A teal bodycon dress with a sequin scroll pattern, high slit, and adjustable spaghetti straps.
$46.90
A sleek black bodycon midi dress with a square neckline and stretchy double-lined knit fabric.
$19.97 $59.90 67% off
A sultry light blue mesh formal dress with a square neckline, high slit, and slim silhouette.
$19.97 $64.90 69% off
A black taffeta skater dress with a low back bow and elegant square neckline.
$29.97 $49.90 40% off
A radiant red satin midi dress with a corset bodice, adjustable straps, and a wrap slit.
$59.90
A sage satin slim-fit formal dress featuring a corset bodice, faux wrap-front, and floor-length hem.
$9.97 $39.90 75% off
A black bodycon mini dress with an asymmetrical hem, cutout bust, and sheer mesh sleeves.
$99.90
A light blue mermaid dress with sequin embroidery, cutout back, and high slit for formal events.
$54.90
A black satin mini dress featuring a ruffled side trim, lace-up back, and wrap-front skirt.
$59.90
A pink floral organza skater dress featuring a lace-up corset bodice and voluminous tulle-lined silhouette.
$9.97 $49.90 80% off
An elegant black mesh midi dress with ruched sides, sheer sleeves, and a tiered ruffled hem.
$9.97 $59.90 83% off
A black glitter midi dress with sheer sleeves, bodycon fit, and a ruched slit detail.
$49.90
A black crepe mermaid gown with a square neckline, corset bodice, and high front slit.
$69.90
A chic black satin A-line short dress featuring a low back and a statement bow accent.
$79.90
A timeless black satin formal dress featuring an open strappy back and mermaid silhouette.
$54.90
An ivory satin skater dress with a halter neckline, drop waist, and bubble hem for semi-formal events.
$54.90
An alluring black velvet-patterned midi dress with a flirty bust cutout and ruffled hem.
$79.90
A playful yellow A-line dress featuring side pleats, square neckline, and comfortable scuba woven fabric.
$79.90
A sleek green mermaid dress with a high slit, adjustable straps, and a square neckline.
$59.90
A black glitter knit midi dress featuring a bodycon fit, low back, and statement bow detail.
$59.90
A black crepe mermaid dress with a square halter neckline and elegant high front slit.
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Slip into the luxe vibes of Mayra! Designed to highlight your figure, this formal satin dress delivers a chic form-hugging fit and a high slit for effortless movement. Fit & FeaturesSmooth satin-knit fabric, moderate stretch, Sleeveless square neckline, spaghetti straps, Fitted bodice, side hip pleating, Form-fitting silhouette, high-cut front slit, Floor-length hem, Style runs small, Where to Wear:Homecoming, weddings, black-tie parties, galas, military balls, engagement parties, rehearsal dinners, bridal celebrations, birthday events, milestone celebrations Free Shipping on All Orders Over $75. | Windsor Mayra Formal Satin Slit Long Dress in Sage | Size: S | Satin Fabric
Create a captivating entrance in this formal wrap dress for your next soiree. All eyes are on you in this stylishly chic long formal dress with a plunging V-neckline to perfectly display a sparkling rhinestone lariat or delicate layers of dainty necklaces. Fit & FeaturesCrepe fabric, moderate stretch, Asymmetrical wrap V-neckline, Adjustable spaghetti straps, Ruched detailing, slim-fit bodice, High front slit, floor-length wrap silhouette, Runs true to size, Where to Wear:Prom, black-tie weddings, and formal parties. Free Shipping on All Orders Over $75. | Windsor Sasha Formal High Slit Wrap Dress in Black | Size: XS | Rhinestone
The Marissa long satin dress brings elegance and sultriness to your formal night. The floor-length gown enhances your curves with a fitted bodice and flattering A-line silhouette while the high front slit provides movement. Fit & FeaturesStretch-satin fabric, non-see-through, double-lined bust, Sleeveless pleated cowl neckline, spaghetti straps, Slim-fit bodice, empire waistline, High front slit, floor-length hem, A-line silhouette, Runs true to size, Where to Wear:Prom, weddings, black-tie soirees, special date nights, and engagement parties. Free Shipping on All Orders Over $75. | Windsor Marissa Formal Satin Cowl Neck Dress in Green | Size: S | Satin Fabric
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
Get all wrapped up in this stylish sleek satin mini dress. Dance the night away at that upcoming wedding or celebrate a girl's night in this statement dress that will have all eyes on you. The dress features a sleeveless square neckline, spaghetti straps, and a ruched wrap silhouette that hugs curves in all the right places. The mini-length dress is composed of a satin-like fabric that offers a moderate stretch. Complete your look with rhinestone earrings and strappy heels. Fit & FeaturesSleeveless square neckline, spaghetti straps, Strapless bra recommended, Ruched wrap-front detail , Mini-length bodycon silhouette , Satin-like fabric, sheen finish, Form-hugging fit, moderate stretch, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Wrapped In Stylish Satin Mini Dress in Denim | Size: XS | Rhinestone/Satin Fabric
Make a sparkly statement at your next soiree in the trendy glam Addison glitter formal dress! Bring radiance to the room in this floor-length dress with a sleek design that fits like a glove. Fit & FeaturesSheer glitter mesh fabric, full knit stretchy lining, Sleeveless cowl neckline, spaghetti straps, High waist seam, Floor-length fitted silhouette, Runs true to size, Where to Wear:Prom, black tie weddings, galas, special date nights, rehearsal dinner Free Shipping on All Orders Over $75. | Windsor Addison Glitter Mesh Formal Dress in Black | Size: XS | Knit Fabric/Mesh Fabric/Mesh Fabric
This adorable strapless A-line mini dress is so your vibe! Designed with a stretchy lined knit fabric, it features a strapless straight-across neckline, chic pleated detailing at the bust, and a flirty flowy A-line silhouette on the mini-length hem. Style for a girl's night with statement earrings and strappy mules. Fit & FeaturesStretchy knit fabric with knit lining, Strapless straight neckline, no-slip strip, Pleated bust, A-line fit, Runs true to size, Free Shipping on All Orders Over $75. | Windsor So Your Vibe Strapless A-line Mini Dress in Denim | Size: L | Knit Fabric
Embellished with light-catching sequins, the Bethanie formal dress is a clear stunner with a lace-up back and a flattering mermaid silhouette with a floor-length hem. Fit & FeaturesSequin-scroll pattern, mesh fabric, stretch knit lining, Sleeveless V-neckline, padded bust, Lace-up back, zipper and hook-eye closure, Mermaid silhouette, Floor-length hem, Runs true to size, Where to Wear:Prom, black-tie events, formal weddings, and upscale parties. Free Shipping on All Orders Over $75. | Windsor Bethanie Formal Sequin V-Neck Mermaid Dress in Yellow | Size: S | Knit Fabric/Mesh Fabric/Mesh Fabric
Look and feel like a sultry senorita in this mesh mini dress perfect for an chic night on the town! It features a sleeveless cowl neckline, dual adjustable spaghetti straps with a tie-neck closure, and side and back ruched seams designed to flaunt your curves along the bodycon silhouette. Complete the look with hoop earrings. Fit & FeaturesSleeveless cowl neckline, Dual adjustable spaghetti straps, tie-neck closure, Side and back ruched seams, Back zipper and hook-eye closure, Bodycon silhouette, mini-length hem, Mesh fabric, brushed soft knit stretchy lining, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Senorita Mesh Strappy Mini Dress in Pink | Size: L | Knit Fabric/Mesh Fabric/Mesh Fabric
Sultry and stunning, the Alisha formal dress will keep all eyes on you. With thin rhinestone detailed straps that give effortless sparkle and a curve-hugging silhouette, and an alluring high slit. Fit & FeaturesLightweight, breathable stretchy fabric, Sleeveless cowl neckline, Rhinestone detailed straps, High waist seam, Floor-length hem, form-fitting silhouette, high slit, Runs true to size, Where to Wear:Prom, glamorous evenings, dinner parties, weddings Free Shipping on All Orders Over $75. | Windsor Alisha Rhinestone Strap Formal Dress in Black | Size: L | Stretchy Fabric/Rhinestone
Square Neckline Cocktail Dresses
Square neckline cocktail dresses are the ultimate confidence-boosting power move for any girl who loves a little drama with her glam. There’s just something about that sharp, defined neckline—equal parts classic and daring—that instantly turns up the volume on every outfit. Whether you’re getting ready for a rooftop soirée, a bestie’s birthday bash, or a spontaneous night out that’s destined to become legendary, a square neckline gives you that sculpted, statuesque vibe that says, “I came to slay.” It’s the kind of silhouette that flatters every curve, frames your collarbones like a work of art, and lets you pile on your favorite layered necklaces or keep things sleek and simple—total main character energy, no matter how you style it. If you’re shopping for yourself (because, duh, you deserve it) or looking for a gift that’ll have your BFF texting you heart emojis for days, a square neckline dress is a no-brainer. It’s universally flattering and endlessly versatile, working its magic from fancy dinners to dance floors to those “just because” moments when you want to feel unstoppable.
When you’re picking out your next square neckline cocktail dress, think about how you want to shine. Do you love a bold, saturated color that makes your skin glow in every selfie, or are you more about those moody, mysterious hues that look fire under twinkling lights? Maybe you’re a fan of luxe fabrics—think velvet that feels like a hug, or shimmery satin that catches every eye in the room. And let’s not forget the details: a little ruching to hug your waist, a thigh-high slit for extra sass, or sleek, minimalist lines that give you that “effortlessly put together” look (even if you got ready in five minutes because you were too busy hyping up your crew). Square necklines also play so well with different sleeve lengths and dress lengths, so you can go for a flirty mini, a chic midi, or a dramatic full-length moment depending on your mood and the vibe of your event. If you’re gifting, this style is a total crowd-pleaser—perfect for the friend who’s always RSVP-ing “yes” or the sister who loves a little extra sparkle in her wardrobe. And if you’re the one unwrapping, you already know you’re about to be the best-dressed in any room.
Let’s be real: every Windsor girl knows that the right neckline can change everything. If you’re obsessed with how a square neckline makes you feel but want to explore more options, you’ll fall for the soft romance of Sweetheart Neckline Cocktail Dresses too—think all the flirty, feminine vibes with a little extra heart. No matter which neckline you choose, you’re guaranteed a dress that’s as fearless and unforgettable as you are. So go ahead, pick your favorite, style it with your boldest heels, and step out ready to own the night. Because when you look this good, there’s no such thing as blending in.