Summer Wedding Guest Formal Dresses
Serving looks hotter than the dance floor? You know it. Our summer wedding guest formal dresses are here to make you the best-dressed plus one—no bouquet catch required. Whether you're RSVP-ing for a rooftop soirée or a dreamy garden ceremony, these dresses bring main character energy with every twirl, toast, and Insta story. Get ready to turn heads and break hearts—because showing up in style is basically your superpower.
$59.90
A chic lavender satin dress with a form-fitting silhouette and high slit for upscale events.
$39.90
A chic black crepe wrap dress with a high slit, adjustable straps, and ruched detailing.
$29.97 $54.90 45% off
A luxurious burgundy satin gown with a high slit and cowl neckline for formal occasions.
$42.90
A sleek sage midi dress with a sleeveless cowl neckline and chic high front slit.
$64.90
A strapless black crepe formal dress featuring a high slit, corset bodice, and ruched waist.
$109.90 - $149.90
A stunning yellow mermaid dress with sequin-scroll mesh, padded bust, and lace-up back.
$49.90
A black crepe formal dress featuring a sleeveless square neckline and a high-cut front slit.
$54.90
A lavender mesh corset column dress featuring a sweetheart neckline and high-side slit for elegance.
$29.97 $59.90 50% off
A denim satin midi dress with a pleated cowl neckline, midriff cutout, and high side slit.
$54.90
A mauve satin maxi dress with a cowl neck, high slit, and sleek spaghetti straps.
$109.90
A dazzling yellow sequin-embroidered mesh dress with a mermaid silhouette and adjustable spaghetti straps.
$77 $109.90 30% off
A stunning green sequin scroll dress with a lace-up back and mermaid silhouette for formal events.
$54.90
An ivory 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.
$119.90
A glamorous yellow mermaid dress featuring a sequin scroll pattern and an alluring lace-up back.
$29.97 $64.90 54% off
A black crepe off-the-shoulder dress with a corset bodice and a high front slit.
$69.90
A stunning denim satin mermaid dress with a strapless sweetheart neckline and floor-sweeping hem.
$9.97 $59.90 83% off
A shimmery black sequin party dress with a one-shoulder neckline and bodycon wrap silhouette.
$64.90
A dreamy pink strapless mesh dress with asymmetrical ruffles and a high side slit.
$29.97 $64.90 54% off
A luxurious gold satin one-shoulder dress with a mermaid silhouette and asymmetrical high front slit.
$109.90
A stunning black sequin dress featuring a lace-up back, sweetheart neckline, and high front slit.
$64.90
A sage satin mermaid dress with a lace-up back and elegant floor-length hem.
$69.90
A green satin formal dress featuring a cowl neckline, high slit, and slim-fit silhouette.
$69.90
A lavender mesh off-the-shoulder dress with ruched seams and a mermaid silhouette for formal events.
$74.90
A glamorous gold satin formal dress featuring a V-neckline, waist cutout, and high side slit.
$79.90
A light blue mesh mermaid gown with faux pearl embellishments and a flattering sweetheart cowl neckline.
$59.90
A lime yellow formal mermaid dress with ruched mesh design and adjustable spaghetti straps.
$89.90
An orange bodycon dress with glitter polka dots, lace-up back, and adjustable spaghetti straps.
$69.90
A mauve glitter mermaid dress with adjustable straps and a flattering square neckline.
$79.90
An elegant wine satin dress with intricate embroidery, beaded accents, and a flattering curve-hugging silhouette.
$79.90
A yellow floral sequin mesh formal dress with a lace-up back and high side slit.
$19.97 $59.90 67% off
A mocha satin formal dress featuring a cowl neckline, high slit, and cross-back spaghetti straps.
$109.90
A yellow satin A-line gown with cold shoulder design, front slit, and hidden side pockets.
$59.90
A sleek eggplant column dress with a cutout accent and high side slit for sultry allure.
$59.90
A dazzling yellow glitter knit formal dress with a high slit and floor-length silhouette.
$59.90
A mauve floral mesh mermaid dress with a lace-up back, high slit, and floor-length hem.
$89.90
A glamorous yellow mermaid dress with glitter knit fabric, ruching, and a stylish back cutout.
$99.90
An elegant navy blue satin dress with a lace-up back and high slit for formal occasions.
$119.90
A stunning royal blue satin dress with sequin scrolls, lace-up back, and a dramatic front slit.
$62.90
A chic green mermaid dress featuring a cold-shoulder design, sweetheart neckline, and high front slit.
$109.90
An orange sequin bodycon dress with a high neckline, open back, and high front slit.
$29.97 $59.90 50% off
A gold satin slim-fit formal dress featuring a corset bodice and floor-length hem with a slit.
$19.97 $74.90 73% off
A chic brown satin formal dress featuring a cowl neckline, waist cutout, and thigh-high slit.
$69.90
A sage satin strapless column dress with a chic pleated neckline and high side slit.
$42.90
A navy blue velvet midi dress featuring a sleeveless sweetheart neckline and pleated bodice.
$159.90
A stunning yellow strapless formal dress with beaded mesh fabric and a high front slit.
$62.90
A rose gold satin mermaid dress with a cowl neckline and crisscross back for formal occasions.
$49.90
A radiant red satin midi dress with a corset bodice, adjustable straps, and a wrap 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
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: XS | 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
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 Black | Size: XL | Knit Fabric/Rhinestone
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
Windsor Kathie Formal Satin One-Shoulder Dress in Gold
$29.97 $64.90
54% off
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 | Size: XS | Satin Fabric
Flattery will get you everywhere in the Delia formal long dress that boasts a flattering mermaid silhouette with a high front slit for effortless allure all evening! Fit & FeaturesLined smooth knit fabric, moderate stretch, Sleeveless cowl neck, pleating, Spaghetti straps, lace-up back, Mermaid silhouette, High front slit, floor-length hem, Runs true to size, Where to Wear:Prom, weddings, bridesmaids, engagement parties, rehearsal dinners, milestone celebrations, dinner parties, dressy date nights Free Shipping on All Orders Over $75. | Windsor Delia Formal Cowl Neck Long Dress in Black | Size: L | Knit 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 Gold | Size: XS | Knit Fabric
Sleek and sophisticated! The Emmie satin formal dress exudes elegance with a lace-up back and flattering mermaid silhouette that accentuates your figure. Fit & FeaturesStretchy 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. Free Shipping on All Orders Over $75. | Windsor Emmie Lace-Up Mermaid Satin Formal Dress in Sage | Size: L | Satin Fabric