Long Blue Prom Dresses
You + long blue prom dresses = a match made in prom night heaven. Whether you’re channeling major mermaid energy or just want to make jaws drop, these dreamy blue gowns are here to help you steal the spotlight. From midnight navy to sky-high blue, your perfect shade is waiting to make your entrance unforgettable. Get ready to twirl, pose, and own every second—because when you show up in long blue prom dresses, the party doesn’t start until you walk in.
$69.90
A blue floral crepe mermaid dress with a sweetheart neckline and high front slit.
$109.90
A chic navy blue mermaid dress with sequins, featuring a lace-up back and thigh-high slit.
$109.90 - $149.90
A light blue mermaid dress with sequin-scroll mesh, padded bust, and lace-up back for formal events.
$74.90
A navy blue glitter knit mermaid dress with a square neckline and lace-up open back.
$79.90
A light blue mesh mermaid dress with faux pearl embellishments and a flattering sweetheart cowl neckline.
$69.90
A navy blue knit mermaid dress featuring lace trim, flutter straps, ruching, and a lace-up back.
$109.90
An elegant navy blue satin gown with a cold shoulder design and sultry front slit.
$89.90
A glamorous light blue mermaid dress with glitter knit fabric, ruching, and a stylish back cutout.
$64.90
A navy blue satin bodycon dress featuring a corset bodice and asymmetrical wrap hem.
$89.90
A navy blue bodycon dress with glitter polka dots, lace-up back, and adjustable spaghetti straps.
$89.90
A shimmering navy blue A-line dress with a sleeveless cowl neckline and high-cut front slit.
$69.90
A navy blue satin glitter mermaid dress with a strapless neckline and pleated bodice.
$77 $109.90 30% off
A royal blue mermaid dress with sequin scrolls, adjustable straps, and a high front slit.
$59.90
A navy blue slinky knit mermaid dress featuring a sweetheart neckline, cowl draping, and high front slit.
$129.90
An elegant navy blue ball gown featuring romantic ruffles, airy tulle, and a flattering A-line silhouette.
$64.90
A royal blue satin dress with a lace-up back, V-neckline, and high front slit.
$59.90
A navy blue satin formal dress featuring a halter neckline, open back, and high front slit.
$69.90
A navy blue mermaid dress with a strappy open back and sleek, stretchy knit fabric.
$59.90
A sultry light blue mesh formal dress with a square neckline, high slit, and slim silhouette.
$79.90
A royal blue satin mermaid dress with a strappy open back and high front slit.
$79.90
A navy blue mermaid dress with a glittery finish, lace-up back, and high front slit.
$99.90
A light blue mermaid dress with sequin embroidery, cutout back, and high front slit.
$99.90
A stunning light blue formal dress with rhinestones, featuring a strapless neckline and cowl back.
$64.90
A royal blue formal dress with a V-neckline, strappy back, and high side slit.
$149.90
A light blue column dress with sequin beaded mesh, adjustable straps, and a high side slit.
$69.90
A light blue mermaid dress with glitter, lace-up back, and high front wrap slit for formal events.
$99.90
A navy blue mermaid gown with glitter knit fabric, cowl neckline, and adjustable spaghetti straps.
$119.90
A light blue sequin mermaid dress with a lace-up back and high front slit.
$169.90
An elegant navy blue A-line dress with glitter sequins, a sweetheart neckline, and a sheer corset bodice.
$89.90
A sophisticated strapless navy blue satin dress with a pleated mermaid silhouette and padded cups.
$76.90
A navy blue mermaid dress with a chiffon tie-back and floral velvet pattern for formal occasions.
$74.90
A navy blue one-shoulder slim dress with glitter knit fabric and a high slit design.
$59.90
A denim mesh formal dress with a sweetheart neckline, lace-up back, and flattering ruched silhouette.
$119.90
A royal blue mermaid dress with sequin embroidery, lace-up back, and high front slit.
$154.90
A light blue formal dress with beaded sequins, cowl neckline, and a high slit for elegance.
$69.90
An enchanting light blue tulle A-line dress with a corset bodice and high front slit.
$79.90
An elegant navy blue mesh mermaid dress featuring faux pearls, off-the-shoulder neckline, and high side slit.
$149.90
A stunning light blue mermaid dress with sequins, beading, and a flattering V-neckline.
$79.90
A royal blue glitter formal dress featuring a strappy open back and high front slit.
$59.90
A navy blue strapless mermaid dress in smooth knit fabric, featuring a high front slit and padded cups.
$59.90
A navy blue velvet mermaid dress with a floral pattern, sleeveless cowl neckline, and high-side slit.
$69.90
A navy blue velvet mermaid dress with a corset bodice and lace-up back design.
$79.90
A stunning royal blue formal dress featuring a lace-up back and high side slit.
$29.97 $89.90 67% off
A light blue sequin formal dress featuring a lace-up back, high slit, and mermaid silhouette.
$119.90
A navy blue lace formal dress with a sheer corset bodice and ruffled A-line silhouette.
$64.90
A light blue mermaid dress with pearl and rhinestone embellishments, featuring a ruched mesh design.
$79.90
A navy blue satin formal dress with a mermaid silhouette and high front slit for elegance.
$119.90
A royal blue sequin mermaid dress with a plunge V-neckline and adjustable spaghetti straps.
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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
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! 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: S | Knit Fabric
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
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 Sage | Size: L | 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 Brown | Size: M | Knit 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, and dressy date nights. Free Shipping on All Orders Over $75. | Windsor Delia Formal Cowl Neck Long Dress in Mauve | Size: XL | Knit 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
Prepare to make a grand entrance in the Ashelyn glitter long formal dress looking like a true masterpiece for prom or special birthday events! Her luxurious knit fabric boasts a mesmerizing glitter pattern, while the side ruching and mermaid silhouette accentuate your curves while the high front slit shows off your shoes of the night. The cowl neckline and padded bra cups offer a flattering and comfortable fit. Style this formal gown with glam earrings and a hair accessory for a stunning look all evening! Fit & FeaturesGlitter pattern, knit fabric lined with jersey knit, Padded bra cups, Adjustable spaghetti straps, High front slit, Back zipper and hook-eye closure, Mermaid silhouette, floor-length, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Ashelyn Cowl Neck Glitter Mermaid Formal Dress in Black | 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: XS | Satin Fabric
Long Blue Prom Dresses
When it comes to making a jaw-dropping entrance, nothing says “main character energy” like a long blue prom dress. Whether you’re channeling ice queen vibes or want to float across the dance floor like something out of your favorite fairytale, blue prom dresses bring that perfect mix of elegance and boldness. It’s the color of confidence, of midnight skies and electric dreams—basically, it’s the move for anyone who wants to stand out without even trying. The best part? Blue looks incredible on everyone. From deep sapphire to dreamy windsor light blue dress shades, there’s a hue for every skin tone, every mood, and every level of “I came to slay.” If you’re picking out your prom look, you know this isn’t just about the dress—it’s about the moment. Picture this: you, glammed up, hair and makeup on point, stepping into the room like you own it. That’s the energy a blue prom dress brings to the table. And let’s be real, you deserve a dress that matches your vibe—one that’s ready to keep up with every selfie, every spin on the dance floor, and every memory you’re about to make.
Choosing the right blue prom dress isn’t just about style (though, hello, we’re here for all the drama and sparkle). It’s about finding a fit that feels like it was made for you—hugging in all the right places, flowing where it needs to, and giving you that unstoppable confidence. Maybe you’re into sleek, curve-hugging silhouettes that make you feel like a Hollywood starlet, or maybe you’re all about that flowy, princess energy with layers of tulle and a little bit of twirl. Long blue prom dresses are basically the ultimate canvas for your personal style. Add a little shimmer, some bold accessories, and the right pair of heels, and you’re ready to go from pre-prom pics to the afterparty without missing a beat. And don’t even get us started on gifting—if you’ve got a sister, bestie, or cousin who’s about to have her big night, helping her pick out a windsor blue moment is basically the ultimate act of love. It’s more than a dress; it’s a confidence boost wrapped in tulle and sequins.
Windsors prom dresses are designed for the girl who’s ready to break hearts and turn heads, all while having the time of her life. Blue prom dresses are the go-to for anyone who wants to make a statement, whether you’re going for modern mermaid, classic glam, or full-on princess. And speaking of princess, if you’re dreaming of that magical, fairytale look, don’t miss our Light Blue Princess Prom Dresses collection—it’s basically made for that “I’m the main event” energy. No matter how you style it, a long blue prom dress is all about owning your moment. You’ve got the power, the style, and the squad behind you—now all you need is the dress that lets you shine.