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!

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$19.97 $79.90 75% off

4 star rating

A chic black mermaid dress featuring a sheer mesh corset bodice and adjustable crisscross straps.

$109.90

4.726191 star rating

A glamorous navy blue mermaid dress with sequins, a lace-up back, and a thigh-high slit.

Sale

$46 $64.90 29% off

4.578948 star rating

A black crepe formal dress with puff sleeves, lace-up back, and a high-cut slit.

$119.90

4.735294 star rating

A stunning lavender mermaid dress featuring sequin scrolls, lace-up back, and high slit.

$79.90

3 star rating

A sleek lavender mermaid dress with a ruched silhouette and adjustable spaghetti straps.

$84.90

4.583334 star rating

A glamorous black glitter knit mermaid dress with a bow-back and floor-length train.

$49.90

4.827586 star rating

A coral satin mermaid dress featuring a lace-up back, high slit, and adjustable spaghetti straps.

$89.90

4.84 star rating

A black knit mermaid dress featuring an off-the-shoulder neckline and dramatic high front slit.

Sale

$19.97 $69.90 71% off

4.772728 star rating

A lavender mesh off-the-shoulder dress with ruched seams and a mermaid silhouette for formal events.

$99.90

4.636364 star rating

A mint sequin scroll mermaid dress with a strappy back, perfect for prom or black-tie events.

$59.90

4.904762 star rating

A stunning black formal dress with a cowl neck, mermaid silhouette, and elegant lace-up back.

$59.90

4.45 star rating

A stunning red mesh mermaid dress with ruched seams and adjustable spaghetti straps for formal occasions.

$69.90

4.842105 star rating

A navy blue knit mermaid dress featuring lace trim, flutter straps, ruching, and a lace-up back.

Sale

$19.97 $79.90 75% off

4.833334 star rating

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

$69.90

4.588235 star rating

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

$89.90

4.25 star rating

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

$74.90

4.428571 star rating

A stunning red mermaid dress with a glitter knit fabric and off-the-shoulder sweetheart neckline.

$59.90

4.615385 star rating

A black crepe mermaid dress with a square halter neckline and elegant high front slit.

Sale

$77 $109.90 30% off

4.461538 star rating

A stunning royal blue mermaid dress with sequins, adjustable straps, and a high front slit.

$79.90

5 star rating

A stunning white mermaid dress with faux pearl embellishments and a cold shoulder neckline.

Sale

$19.97 $69.90 71% off

4.461538 star rating

A strapless navy blue mermaid dress in shimmering satin glitter fabric with a pleated bodice.

Sale

$15.97 $69.90 77% off

4.454546 star rating

A pink glitter knit mermaid dress with a lace-up back and high front slit.

$69.90

4.25 star rating

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

$79.90

4.875 star rating

A glamorous black mermaid dress with glitter knit fabric, open back, and high front slit.

Sale

$19.97 $69.90 71% off

4.625 star rating

A wine-colored mermaid dress with glitter crepe fabric, cutout bodice, and high front wrap slit.

$69.90

4.5 star rating

A brown mermaid formal dress featuring a halter V-neckline and open back in smooth knit fabric.

Sale

$19.97 $89.90 78% off

4.666667 star rating

A lavender mermaid gown with a lace-up back and glitter lurex fabric for formal occasions.

$59.90

4.333334 star rating

A stunning periwinkle mesh dress with a ruched mermaid silhouette and off-the-shoulder neckline.

Sale

$15.97 $49.90 68% off

4.833334 star rating

An elegant orange mermaid dress featuring a cowl neckline and adjustable spaghetti straps in stretchy knit.

$89.90

3.4 star rating

A stunning black sequin glitter dress with a sheer corset bodice and mermaid silhouette.

$79.90

5 star rating

A black glitter mesh mermaid dress with off-the-shoulder neckline and sheer long sleeves.

$69.90

5 star rating

A blue floral crepe mermaid dress with a high slit, sweetheart neckline, and corset bodice.

$99.90

4.6 star rating

A yellow mermaid sequin dress with a cutout back, high slit, and adjustable spaghetti straps.

Sale

$19.97 $64.90 69% off

4.6 star rating

A green knit mermaid dress with a cowl neckline, spaghetti straps, and a high front slit.

$79.90

5 star rating

A white formal dress featuring faux pearl embroidery, a sweetheart neckline, and a high side slit.

Sale

$19.97 $99.90 80% off

4.6 star rating

A mauve satin mermaid dress with beaded applique neckline, perfect for formal events.

$119.90

5 star rating

An orange mermaid dress with sequin embroidery, lace-up back, and a high front slit.

Sale

$19.97 $159.90 88% off

4.75 star rating

An ethereal green tulle formal dress with sequins, a corset bodice, and a mermaid silhouette.

$169.90

4 star rating

A pink mermaid formal dress with bead sequins, lace-up back, and high front slit.

$59.90

4 star rating

A mauve mesh mermaid dress featuring a lace-up back, sweetheart neckline, and elegant ruching.

$74.90

3.75 star rating

A black glitter knit mermaid dress with a halter neckline and high front wrap slit.

Sale

$19.97 $69.90 71% off

4.75 star rating

A chic black mermaid dress featuring chiffon and lace with a ruched sweetheart neckline.

$49.90

5 star rating

A burgundy floral mesh maxi dress featuring a plunge halter neckline and curve-hugging mermaid silhouette.

$64.90

4.666667 star rating

A wine velvet mermaid dress with a chic ruched halter neckline and partially open back.

$59.90

4.333334 star rating

A navy blue velvet mermaid dress with a floral pattern, sleeveless cowl neckline, and high-side slit.

$69.90

4.666667 star rating

A black floral mesh mermaid dress with a cutout halter neckline and padded bra cups.

$59.90

5 star rating

A black off-the-shoulder mermaid gown featuring luxe ruching, sheer lace bodice, and smooth knit fabric.

Sale

$19.97 $69.90 71% off

5 star rating

A coral glitter formal dress with a lace-up back and curve-hugging mermaid silhouette.

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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: S | 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

Windsor 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: S | Chiffon/Crepe Fabric

Chic Staple Ribbed Knit Skater Dress in Black
(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 Black | Size: M | Knit Fabric

Gwendolyn Glitter Knit Bow-Back Mermaid Dress in Black
(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 Black | Size: L | 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

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

Windsor Alicia Off-The-Shoulder Mermaid Formal Dress in Green
(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 Green | Size: XS | Knit Fabric

Emmie Lace-Up Mermaid Satin Formal Dress in Brown
(22) 4.590909 star rating

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 Brown | Size: L | Satin Fabric

Long Mermaid Dresses

Long mermaid dresses are having a major moment, and honestly, it’s about time. There’s just something about that dramatic, curve-hugging silhouette that makes you feel like you could take over the world—or at least the dance floor. Whether you’re prepping for a black-tie gala, your bestie’s wedding, or your own epic birthday bash, a mermaid dress is that perfect mix of glam and power move. Picture this: you walk in, the room goes quiet for a second, and all eyes are on you as the fabric hugs every curve and then flares out with a little extra drama at your ankles. That’s the magic of mermaid dresses for women—they’re designed to serve looks, boost confidence, and make you feel like the main character in every room. When you slip into a ruched mermaid dress or one with a sleek, smooth finish, you’re not just getting dressed; you’re making an entrance.

Shopping for dresses mermaid style isn’t just about picking the prettiest color (although, let’s be real, bold jewel tones and classic blacks always hit different). It’s about finding the fit that makes you feel like your most unstoppable self. Look for details that elevate the vibe—think daring thigh-high slits, intricate beading, or a little shimmer that catches the light when you move. If you’re feeling extra, a long train or a dramatic back can turn your walk into a runway moment. And don’t sleep on ruching! A ruched mermaid dress is basically a confidence booster stitched into every seam, sculpting and flattering your shape in all the right places. These dresses are also a go-to for gifting—whether you’re helping your best friend find her dream formal dress or surprising your sister with something unforgettable for her big night, mermaid dresses are guaranteed to make anyone feel like a superstar. Pair them with sky-high heels, statement earrings, and a killer clutch, and you’re ready for any event that calls for a little extra sparkle.

Life’s too short to blend in, and with formal dresses mermaid style, blending in isn’t even an option. These pieces are for the girls who want to turn heads, steal the spotlight, and leave a little glitter wherever they go. Maybe you’ve got a milestone celebration on the calendar, or maybe you just want to treat yourself to something that makes you feel absolutely iconic—either way, there’s a mermaid dress out there with your name on it. And if you’re searching for more inspo or want to see the latest trends in this show-stopping silhouette, check out our curated collection of Mermaid Formal Dresses for all the jaw-dropping styles your closet’s been dreaming of. Trust us, once you slip into one of these, you’ll never want to go back to basic.

Top Picks For Long Mermaid Dresses