Women's Halloween Mermaid Costume Dress with Sequin Skirt and Strapless Sweetheart Neckline
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Strapless Mermaid Costume Dress – Transform Into an Enchanting Sea Creature
This mermaid costume delivers instant magical transformation with its stunning sequined skirt and fitted silhouette. Crafted from shimmering sequin fabric with a tiered organza tail and metallic purple bodice, it's the perfect choice for Halloween parties, themed events, and costume celebrations. The strapless sweetheart neckline and lace-up corset back create a flattering, show-stopping look that works beautifully indoors for parties, photoshoots, and masquerade events.

A seasonal best seller every October — this enchanting sequin mermaid dress captures the fantasy and elegance of underwater royalty.
Halloween stock sells out fast — order early. Dispatched within 24–48 hours.
Why You'll Love This Mermaid Costume
- Spooky Underwater Glamour: The shimmering scale effect, sequined skirt, and tiered organza tail create an instantly recognizable and mesmerizing mermaid transformation.
- Premium Materials & Durability: Sequin-covered bodice with mesh lining and sturdy lace-up corset back ensure this costume holds its shape and sparkle through multiple wears.
- Flattering Fitted Design: The strapless sweetheart neckline and fitted silhouette create a sleek, elegant look that flatters a range of body types.
- Floor-Length Impact: The full-length hem with blue ruffle waist trim and flowing tiered tail delivers a dramatic, head-turning entrance at any event.
- Reusable Year After Year: High-quality sequin and organza construction means this costume stays vibrant and wearable for many Halloweens to come.
Perfect For
Halloween Costume Parties: Stand out at any gathering with this show-stopping sequin mermaid dress that rivals any police officer costume or traditional party look.
Themed Events & Masquerades: The elegant strapless design and metallic purple bodice make it ideal for fantasy-themed celebrations, underwater parties, and formal costume events.
Photoshoots & Costume Portraits: The floor-length tiered tail and shimmering scale effect photograph beautifully, making it perfect for professional and social media costume shoots.
Carnival & Festival Celebrations: The vibrant sequined skirt and dramatic silhouette ensure you'll be noticed and admired in any festive crowd.

Specifications
- Material: Sequined bodice with metallic purple finish, tiered organza tail, mesh lining
- Design Features: Strapless sweetheart neckline, lace-up corset back with black ribbon lacing, blue ruffle waist trim, shimmering scale effect
- Fit: Fitted silhouette with floor-length hem
- Available Sizes: S, M, L, XL
- Color Options: Color A, Color B
What's in the Box
- 1x Mermaid Costume Dress
Slip on this mermaid costume and adjust the lace-up corset back for a custom fit. The lightweight mesh lining and sequined construction make it comfortable to wear throughout the evening. After your event, store flat or hang on a padded hanger in a cool, dry place to preserve the sequin detail and organza layers for next Halloween.
Halloween is almost here — order now so this stunning sequin mermaid dress arrives in time for your celebration. We stand behind every purchase with a money-back guarantee, so you can shop with confidence. Fast dispatch means your costume will be ready when you need it.
Most styles follow standard U.S. sizing. Not sure? Use Find my size above for a personal recommendation in seconds, or see our full size guide.
Between sizes? Size up for coats and knitwear you’ll layer. Prefer advice from a person? Email contact@bardwellrye.com with your height, weight and usual size.
Free standard shipping on every U.S. order. Orders are prepared within 1–3 business days and ship from our North American warehouse; delivery takes 3–5 business days. You’ll receive a tracking link by email.
90-day returns: return or exchange unworn items with tags attached within 90 days. Email us and we’ll send a printable return label (label cost is deducted from your refund; free if your item arrived damaged or incorrect). Full return policy.
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Material composition is listed in the product details above. Follow the care label; as a rule, hand wash knits cold and dry flat, and brush wool coats after wear. Store knits folded and coats on a wide hanger.



















