Black Sequin Mermaid Prom Dresses

Black sequin mermaid prom dresses are the secret weapon for anyone ready to own the night. Sleek, dramatic, and unapologetically glam, these dresses know how to make an entrance and keep all eyes on you. Whether you're channeling old Hollywood or adding a little edge to your prom look, there's something about that curve-hugging silhouette and shimmering finish that just hits different. If your vibe is bold confidence with a side of sparkle, black sequin mermaid prom dresses have your name written all over them.

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Angela Floral Sequin Formal Dress in Black

$99.90

A black mermaid gown adorned with floral sequins, featuring a lace-up back and high front slit.

Lori Formal Sequin Lace-Up Long Dress in Black

$109.90

A stunning black sequin dress featuring a lace-up back, sweetheart neckline, and high front slit.

Ray Sequin Tie-Back Formal Dress in Black

$89.90

A black sequin mermaid gown featuring a plunging V-neckline and an open tie-back design.

Windsor Jolie Sequin Bead Mermaid Formal Dress in Black

$79.90

An elegant black mermaid dress featuring sequin beaded mesh, chiffon halter neckline, and flowing tie-back detail.

Shirley Sequin Corset Lace-Up Formal Dress in Black

$149.90

A black sequin-embellished mesh gown featuring a sheer corset bodice, lace-up back, and high slit.

Cassie Sequin Pattern Mermaid Formal Dress in Black Print

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Cassie Sequin Pattern Mermaid Formal Dress in Black Print

$129.90

A black sequin mesh mermaid gown featuring a geometric pattern, V-neckline, spaghetti straps, and low back.

Audrina Glitter Strapless Mermaid Formal Dress in Black

$69.90

A black glitter knit mermaid gown featuring a strapless padded neckline and a graceful floor-length silhouette.

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Windsor Mayra Formal Satin Slit Long Dress in Sage

$59.90

(183)

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

Sasha Formal High Slit Wrap Dress in Black

$39.90

(174)

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: M | Rhinestone

Windsor Rowena Sequin Mermaid Dress in Navy Blue

$109.90

(168)

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 Cheyenne Formal One-Shoulder Velvet Dress in Black

$59.90

(130)

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 | Size: S | Rhinestone/Velvet Fabric

Windsor Addison Glitter Mesh Formal Dress in Wine

$69.90

(117)

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 Wine | Size: S | Knit Fabric/Mesh Fabric/Mesh Fabric

Bethanie Formal Sequin V-Neck Mermaid Dress in Pink-2

$109.90

(93)

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:Formal dances, black-tie events, formal weddings, and upscale parties. Free Shipping on All Orders Over $75. | Windsor Bethanie Formal Sequin V-Neck Mermaid Dress in Pink-2 | Size: XS | Knit Fabric/Mesh Fabric/Mesh Fabric

Windsor Amirah Formal Glitter Cowl Neck Column Dress in Black

$59.90

(75)

Look your best for a fancy night in the stunning Amirah formal glitter dress! Fashioned with an eye-catching cross back, this dress will make you feel like the star of the evening with a high slit and floor-length column silhouette. Fit & FeaturesGlitter knit fabric, moderate stretch, Sleeveless cowl neckline, Spaghetti straps, cross back, Side pleated seam, slim silhouette, high front slit, Floor-length column silhouette, Runs true to size, Extra glitter for maximum sparkle - may have some natural fallout, Where to Wear:Prom, black-tie weddings, galas, and upscale birthday events. Free Shipping on All Orders Over $75. | Windsor Amirah Formal Glitter Cowl Neck Column Dress in Black | Size: S | Knit Fabric

Rose Formal Mesh Corset Column Dress in Brown

$54.90

(72)

The Rose formal long column dress is the perfect combination of elegance and glamour with a sheer corset trim and high-side slit for effortless allure! Fit & FeaturesMesh fabric, partial stretchy knit lining, Sleeveless sweetheart neckline, cowl pleating, Adjustable spaghetti straps, crisscross open back, Padded bust, sheer corset bodice, flexible boning, Side ruched seams, fitted column silhouette, High-side slit, floor-length hem, Style runs small, Where to Wear:Prom, weddings, bridesmaids, rehearsal dinners, cocktail soirees, and dressed-up date nights. Free Shipping on All Orders Over $75. | Windsor Rose Formal Mesh Corset Column Dress in Brown | Size: XS | Knit Fabric/Mesh Fabric

Windsor Jamie Lace-Up Satin Formal Column Dress in Brown

$89.90

(72)

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 Brown | Size: S | Knit Fabric/Satin Fabric

Shayla Strapless Corset Lace Formal Dress in Red

$159.90

(70)

Designed to be eyed up and down, the Shayla long formal dress brings the sultry heat to any black-tie occasion! A curved neckline and sheer mesh lace corset bodice create a sophisticated silhouette, while the lace-up back provides a personalized fit. Fit & FeaturesSheer mesh, smooth knit fabric, Lace corset bodice, flexible boning, padded bra cups, Lace-up, back zipper with hook-eye closure, Floor-length fitted silhouette, high front wrap slit, Runs true to size, Where to Wear:Formal dances, black-tie galas, red-carpet occasions, and big birthday events, weddings, bridal showers, engagement parties, rehearsal dinners. Free Shipping on All Orders Over $75. | Windsor Shayla Strapless Corset Lace Formal Dress in Red | Size: S | Knit Fabric/Sheer Mesh Fabric

Black Sequin Mermaid Prom Dresses

When prom season starts swirling onto the calendar—yes, even in the depths of February, when the world is still thawing out—there’s a certain kind of magic in the air. Black sequin mermaid prom dresses are the sartorial equivalent of that electric, can’t-sit-still anticipation. They’re for the girls who want their look to do the talking before they even step into the room, and for the ones who believe the best memories start with a little sparkle and a lot of confidence. There’s something undeniably powerful about slipping into a dress that hugs every curve, catches every glimmer of light, and transforms a simple night out into an all-eyes-on-you moment. Maybe you’re the friend who’s always on the group chat with the first mood board, or maybe you’re the one who waits until the last minute but still manages to nail it—either way, a black sequin mermaid dress is your secret weapon. It’s the kind of piece that doesn’t just photograph well (though, let’s be real, it’s basically made for the camera), but also feels incredible to wear, with sequins that shimmer like city lights and a silhouette that’s pure main character energy—minus the cliché.

Choosing the perfect black sequin mermaid dress isn’t just about finding something that fits the theme (or the invite). It’s about finding a dress that fits you—your vibe, your plans, your vision for the night. Maybe you’re planning to dance until your feet hurt, or maybe you want to make a grand entrance and then spend the rest of the night laughing with your best friends. Either way, comfort matters just as much as style. Look for details like adjustable straps, supportive bodices, and stretch lining, so you can move (and breathe) with zero stress. Think about the little things, too: a sweep train for dramatic exits, a high slit for that flash of leg, or a plunging neckline if you’re feeling bold. And don’t underestimate the power of accessories—sleek heels, a statement clutch, and minimalist jewelry will let the sequins do their thing while keeping the look sophisticated. If you’re shopping for someone else (maybe a sister, a best friend, or even as a surprise for your prom date), a black sequin mermaid dress is a gift that says, “I see your sparkle—and I want everyone else to see it, too.” It’s a look that works for almost any formal event, not just prom: think winter galas, black-tie birthdays, or that one night you want to remember forever.

Whether you’re all about the drama or you prefer a subtle shimmer, black sequin mermaid prom dresses deliver that perfect mix of timeless glamour and modern edge. They’re designed to make you feel as good as you look—because let’s be honest, confidence is the real showstopper. If you’re ready to find your dream dress and step into your own spotlight (without ever feeling overdone), take a look at Windsor’s full collection of Sequin Mermaid Gowns for even more inspiration. This is your moment—own it, celebrate it, and let your dress do the dazzling.

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Black Sequin Mermaid Prom Dresses

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Black Sequin Mermaid Prom Dresses

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