Long Mermaid Dresses
Long mermaid dresses are the perfect blend of elegance and allure, designed to make you feel like the absolute queen you are. Picture yourself gliding into any event, turning heads and leaving a trail of dropped jaws in your wake. These stunning gowns hug your curves in all the right places, flaring out into an exquisite silhouette that screams sophistication with a side of sass. Whether you're gracing a gala, attending prom, or making a statement at a wedding, long mermaid dresses ensure you're the star of the show. So go ahead, let your inner siren shine and own every room you step into!
$74.90
A navy blue glitter knit mermaid dress with a square neckline and lace-up open back.
$69.90
A brown mermaid formal dress featuring a halter V-neckline and open back in smooth knit fabric.
$69.90
A blue floral crepe mermaid dress with a sweetheart neckline and high front slit.
$109.90 - $149.90
A pink mermaid silhouette dress with sequin-scroll pattern, V-neckline, and lace-up back.
$46 $64.90 29% off
A black crepe formal dress with puff sleeves, lace-up back, and high-cut slit for prom.
$119.90
A glamorous lavender mermaid dress with sequin scrolls, lace-up back, and high slit.
$84.90
A pink glitter knit mermaid dress with a bow-back accent and a floor-length train.
$89.90
A luxurious green knit mermaid dress featuring an off-the-shoulder neckline and dramatic high front slit.
$99.90
A mint sequin scroll mermaid dress with a strappy back, perfect for prom or black-tie events.
$59.90 - $64.90
A pink knit mermaid dress with a cowl neck, lace-up back, and high front slit.
$79.90
A red knit mermaid dress with glitter, cowl neckline, and high front slit for formal events.
$59.90
A lavender floral mesh mermaid dress with a lace-up back, high slit, and cowl neckline.
$69.90
A periwinkle mesh off-the-shoulder dress with ruched seams and a mermaid silhouette.
$79.90
A light blue mesh mermaid gown with faux pearl embellishments and a flattering sweetheart cowl neckline.
$59.90
A stunning red mesh mermaid dress with ruched seams and adjustable spaghetti straps for formal occasions.
$69.90
A green mermaid formal dress with a cowl neckline, crisscross back, and dramatic high front slit.
$74.90
A red glitter knit mermaid dress with an off-the-shoulder neckline and high front wrap slit.
$77 $109.90 30% off
A stunning royal blue mermaid dress with sequins, adjustable straps, and a high front slit.
$89.90
A glamorous burgundy mermaid dress with glitter knit fabric, ruching, and a stylish back cutout.
$19.97 $69.90 71% off
A pink glitter knit mermaid dress with a lace-up back and high front slit.
$59.90
A black crepe mermaid dress with a square halter neckline and elegant high front slit.
$69.90
A navy blue mermaid dress with a strappy open back and sleek, stretchy knit fabric.
$79.90
A sophisticated green off-the-shoulder mermaid dress featuring a sultry wrap slit and padded cups.
$69.90
A wine-colored mermaid dress with glitter crepe fabric, cutout bodice, and high front wrap slit.
$89.90
A lavender mermaid gown with a lace-up back and glitter lurex fabric for formal occasions.
$199.90
A glamorous periwinkle mermaid dress with sequin scrolls, tulle ruffles, and adjustable lace-up back.
$99.90
A light blue mermaid dress with sequin embroidery, cutout back, and high front slit.
$69.90
A captivating blue mermaid dress featuring glitter fabric, an open back, and a sweetheart neckline.
$64.90
A green knit mermaid dress with a cowl neckline, spaghetti straps, and a high front slit.
$39.97 $79.90 50% off
A glamorous green mermaid dress featuring glitter fabric, lace-up design, and a high front slit.
$63 $89.90 30% off
A green sequin mermaid dress with a boho pattern, adjustable straps, and a floor-length hem.
$59.90
A mauve mesh mermaid dress with a sweetheart neckline, lace-up back, and elegant ruching.
$119.90 - $129.90
A coral sequin mermaid dress with a corset bodice, high slit, and adjustable straps.
$59.90
A sophisticated black mermaid dress featuring a mock neckline, high slit, and smooth knit fabric.
$79.90
A chic black mermaid dress featuring a sheer mesh corset bodice and adjustable crisscross straps.
$149.90
A stunning white mermaid dress featuring beaded embellishments, adjustable straps, and an open-back design.
$69.90
A black lace mermaid dress featuring a sweetheart neckline and adjustable spaghetti straps for formal occasions.
$74.90
A black glitter knit mermaid dress with a halter neckline and high front wrap slit.
$79.90
A glamorous green mermaid dress with glitter knit fabric, lace-up back, and padded bra cups.
$9.97 $49.90 80% off
A chic yellow mermaid dress with a cowl neckline and adjustable spaghetti straps in stretchy knit fabric.
$79.90
A strapless lavender mermaid dress with a glittery finish and a high front wrap slit.
$64.90
A wine velvet mermaid dress with a chic ruched halter neckline and partially open back.
$29.97 $109.90 73% off
A lavender mermaid dress with floral sequins, high slit, and adjustable spaghetti straps for formal events.
$64.90
A royal blue mermaid dress with glitter, lace-up back, and sleeveless v-neckline for formal occasions.
$99.90
A lavender mermaid gown with glitter knit fabric, cowl neckline, and adjustable spaghetti straps.
$129.90
An ultra-glamorous orange sequin beaded dress with a strapless pleated neckline and mermaid silhouette.
$159.90
An ethereal green tulle formal dress with sequins, a corset bodice, and a mermaid silhouette.
$119.90
An orange mermaid dress with sequin embroidery, lace-up back, and a 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
Long Mermaid Dresses
Ready to make your entrance unforgettable? Long mermaid dresses are the ultimate power move for any Windsor girl who’s got a flair for drama and a love for standing out. These curve-hugging wonders are all about serving hourglass realness, hugging every line and flaring out just in time for that jaw-dropping finish—think red carpet energy, but make it your own. Whether you’re heading to a gala, prom, or a black-tie wedding, a long mermaid dress is your ticket to feeling like the main character. There’s something about the way a mermaid long dress glides across the floor that just hits different—like you’re floating on confidence and a little bit of mischief. If you’re gifting, this is the dress you give to the friend who’s never met a spotlight she didn’t like, or the sister who’s ready to take her formal look to the next level. It’s the kind of piece that turns every entrance into a moment, every photo into a memory, and every night into a story worth telling.
When you’re picking out your perfect Windsor mermaid dress, it’s all about the details. Want to channel those classic Hollywood vibes? Go for a long sleeve mermaid dress in a luxe fabric—think velvet, satin, or a touch of shimmer. Sleeves bring the drama and a little extra mystery, especially when you’re working with sheer or embellished details. If you’re all about showing off those arms and shoulders, a strapless or off-the-shoulder mermaid dress lets you play up your favorite jewelry and go big on glam. The beauty of mermaid dresses is how they balance sophistication and spice, giving you all the coverage you want with a silhouette that’s anything but shy. And let’s talk about color: whether you’re feeling bold in jewel tones, classic in black, or ethereal in pastels, there’s a mermaid long dress that matches your vibe. Don’t forget about the finishing touches—statement earrings, a killer clutch, and heels that make you feel unstoppable. This is your moment, and your dress should hype you up every step of the way.
No matter what’s on your calendar, mermaid dresses are here to make sure you never blend into the background. They’re made for twirling on the dance floor, posing for the camera, and collecting compliments like it’s your full-time job. If you’re shopping for yourself, think about the moments you want to create—maybe it’s your first big formal, maybe it’s a milestone birthday, or maybe you just want to treat yourself to something that makes you feel like a million bucks. And if you’re shopping for someone else, a mermaid dress is a gift that says, “I see you, superstar.” For even more inspo and to find the dress that’s destined for your next big night out, check out our curated collection of Mermaid Formal Dresses and get ready to own every room you walk into.