| SIZE | OS | S | M | L |
| Dress Size | One Size | 4-6 | 8-10 | 12-14 |
| Bust | 34.5-40.5" | 34.5-35.5" | 36.5-37.5" | 39-40.5" |
| Waist | 26-32" | 26-27" | 28-29" | 30.5-32" |
| Hip | 36-42" | 36-37" | 38-39" | 40.5-42" |
| Inseam | 27.5" | 28" | 28.5" |
Under the Sea Mermaid Costume
Black Friday Sale
20% Off $25+ Code: BF2025% Off $100+ Code: BF25
30% Off $175+ Code: BF30
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Description
You’re a mermaid princess at heart and it’s time to show the world those glamorous aquatic vibes in the Leg Avenue 3-Piece Under the Sea Mermaid Costume Dress. This magical mermaid costume features a sheer dress with built-in bodysuit, velvet sear star bodice, flitter skirt with layered ruffle fin, and star fair clip. The enchanting velvet and sequin trimmed tip features the iconic seashell cups, attached sea star brooch and clear adjustable straps. A sheer midriff panel, glittering sheer skirt and cheeky bodysuit cut add a sexy spellbinding touch.
For the iconic mermaid princess costume, pair the purple shell bra with the Leg Avenue 27” Long Wavy Wig in Red. For the perfect group costume, grab your mermaidens and check out the Leg Avenue Mermaid costume collection. Great for Halloween, cosplay or theme costume parties. Sizing: X-Small fits size 0-2, Small fits size 4-6, Medium fits size 8-10, and Large fits size 12-14. Care: Hand wash in cold water, drip dry.
- PACKAGE INCLUDES: dress, clear straps, hair clip.
- FIT & STYLE: The built-in bodysuit with snap crotch for easy wear.
- MATERIALS/ CARE: Hand wash cold, Do not bleach, Drip dry, Do not iron
- OCCASION: This Under the Sea Mermaid costume for women is perfect for themed parties, cosplay, Halloween, and on-land adventures.
- COMPLETE THE LOOK: Add the Leg Avenue 27" Long Wavy Red Wig to complete your little mermaid transformation.
- Create an awesome friend Halloween costume by getting the whole princess squad together!
- FINAL SALE
Size Chart
Costumes & Lingerie Size Chart
| SIZE | XS | S/M | M/L | XL |
| Dress Size | 0-2 | 2-8 | 8-14 | 16-18 |
| Bust | 32.75-33.5" | 34.5-36.5" | 37.5-40.5" | 42-43.5" |
| Waist | 24.25-25" | 26-28" | 29-32" | 33.5-35" |
| Hip | 34.25-35" | 36-38" | 39-42" | 43.5-45" |
| Inseam | 27" | 29" |
How to Measure
Women's Plus Size Chart
| SIZE | Queen | 1X/2X | 3X/4X |
| Dress Size | 16-18 | 16-20 | 22-26 |
| Bust | 42-43.5" | 42-46" | 48-52" |
| Waist | 33.5-35" | 33-37" | 38-42" |
| Hip | 43.5-45" | 43-47" | 48-52" |
| Cup | C-D | D-DD | DD+ |
Hosiery Size Chart
| SIZE | One Size | Queen | 1X-4X |
| Height | 4'11"-5'9" | 5'0"-5'11" | 5'2"-6'0" |
| Weight | 90-165 lbs | 150-220 lbs | 180-275 lbs |
| SIZE | S/M | M/L |
| Thigh Width | 21"-22.5" | 23"-24.5" |
Men's Size Chart
| SIZE | S | M | L | XL |
| Chest | 34-36" | 38-40" | 42-44" | 46-48" |
| Waist | 28-30" | 32-34" | 36-38" | 40-42" |
| Inseam | 31-33" | 31-33" | 31-33" | 31-33" |
| SIZE | S/M | M/L | OS |
| Chest | 36-38" | 40-44" | 46-62" |
| Waist | 28-32" | 34-38" | N/A" |
| Inseam | 30-31" | 31-32" | N/A" |
How to Measure
Children's Size Chart
| SIZE | XS | S | M | L |
| Age | 3-4 | 4-6 | 7-10 | 10-12 |
| Chest | 22" | 24.5" | 26" | 28.5" |
| Height | 28-32" | 32-42" | 42-49" | 50-55" |
| SIZE | XXS | S/M | M/L | XL |
| Age | 2-3 | 4-10 | 8-12 | 11-13 |
| Chest | 20" | up to 26" | up to 28" | 30" |
| Height | 24-28" | up to 45" | up to 55" | 54-59" |
Shipping
Important Shipping Update
In celebration of the holidays, our warehouse will be closed on November 28th & 29th. Orders will not be shipped during this time. Shipping will resume on December 2nd. Happy Thanksgiving!🦃
For full shipping details: Shipping & Delivery. All overnight orders placed Friday will be delivered on Monday!
Shipping Options
Applies To Orders Delivered To 48 States Within The United States (U.S.):
| Shipping Method (In-Transit Time) |
Order Today Before (PST) |
Cost | Free Over |
| Standard (3-5 business days) |
12:00 PM | $5.95 | $50 |
| Expedited (2 business days) |
12:00 PM | $20 | N/A |
| Prioirty (1 business day) |
12:00 PM | $25 | N/A |
Orders Delivered To Alaska, Hawaii, U.S Territories and APO/FPO/DPO
| Shipping Method (In-Transit Time) |
Order Today Before (PST) |
Cost | Free Over |
| Standard (3-5 business days) |
12:00 PM | $9.95 | N/A |
Returns
For full Return details: Returns Policy.
Returns
Halloween Costumes and Costume Accessories purchased between Oct 15 and Oct 31 are not eligible for refunds or exchanges. All costume purchases made during this period are final sale.
Lingerie, Hosiery, Swimwear, Face Masks, Clearance Items & items marked Final Sale are final sale. Due to the intimate and sensitive nature of these items, they are ineligible for returns.
Eligible merchandise can be returned to Leg Avenue for store credit or refund within 30 days of purchase. Returns must be in original condition in which they were received (unwashed, unworn, and with the original tags & packaging).
We will issue a store credit or refund for eligible returned items, as well as associated state tax. Original shipping fees are not refundable unless the error was on our end.