

🧜♀️ Light up the party with mermaid magic!
The Koatobbor Girls Mermaid Costume is a handmade, LED light-up tutu dress designed for girls aged 3-8. Featuring adjustable satin straps, a stretchy crochet bodice, and vibrant tulle decorated with starfish and flowers, it transforms any occasion into an undersea celebration. Perfect for Halloween, birthdays, and dress-up, this waterproof costume includes a matching headband and requires 3 AAA batteries (not included) to illuminate the multicolor skirt, making your little one the star of every party.














| ASIN | B09FZ8XY3G |
| ASIN | B0BHR315JM |
| Age Range Description | Little Kid |
| Apparel Fabric Stretch | Medium Stretch |
| Best Sellers Rank | #75,744 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #93 in Girls' Costumes |
| Brand Name | Koatobbor |
| Color | White Led-light Purple |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,937) |
| Date First Available | October 9, 2022 |
| Department | Girls |
| Fabric Type | Elastic,Satin |
| Fit Type | Regular |
| Fit to Size Sentiment | Positive |
| Garment Size Country | United States |
| Included Components | Dress, Headband |
| Material | Polyester |
| Occasion | Halloween |
| Pattern | Cartoon |
| Product Care Instructions | Do Not Wash |
| Size | 7-8 Years |
| Special Features | Waterproof |
| Target Audience | Girls (3-8 years) |
| Theme | Halloween |
| character | Mermaid Luna Love |
G**S
Cute little dress
Cute, very attractive design and fun for little girls. Haven't washed it yet! Good quality beautiful when lights on!
D**D
Twinkling tails and birthday smiles
This dress is pure enchantment. The purple bodice with starfish and flower details, combined with the light-up multicolor tutu skirt, makes it an instant favorite for birthday parties, Halloween, or just backyard mermaid missions. I love the bonus LED feature, which adds sparkle without being too bright—just enough to wow without overwhelm. The matching seashell headband completes the look and fits snugly (yes, it’s adjustable!), making the whole set feel like an undersea celebration in motion. At 4.6 stars across 481 reviews and 300+ purchases this month, it’s clearly delighting lots of little sea explorers. Ours was first scooped up in February and it still makes waves in the dress-up bin. If you’re looking for a costume that blends princess charm with magical flair, this one floats to the top—and it’s earned every shimmer.
C**R
Absolutely beautiful
My granddaughter wanted to be a mermaid for Halloween. This dress was soft in the upper chest so she didn't feel itchy! Oh, it lights up with batteries in a little battery pocket
A**E
Fit perfect !
My niece loved it!!! She looked so cute 😍
A**W
Great find
Loved this dress. I bought it for my grands bday. It fit perfect and the lights made the dress super fun
J**E
Lights work sometimes
Cute dress, if the lights work. Mine kept turning off and on.
T**S
Special!
This made a 5 year old little girl over the moon happy. Absolutely adorable, marveled by all who saw her wear it constantly! She did not want to take it off. For the price, absolute find!
M**L
It’s perfect for your mermaid loving baby!
It’s the cutest thing I’ve ever seen! My daughter is going to go crazy for this birthday dress. We’re having her birthday party in Costa Rica where her TT is going to be a mermaid! So this is perfect to make her feel beautiful in the cutest light purple! Material is double lined which I love, inside has a silky texture. Batteries are easy to put in comes with a pocket to put the pack I. And the crown is just the cherry on top! Highly recommend! 🥰
O**I
My daughter was so happy
R**G
Beautiful dress!
I**O
Hermoso vestido, telas sencillas tipo tul suave pero bonito como disfraz, las luces led brillan bonito y duran
M**O
La talla es la adecuada, la tela resistente, a mi bb le fascinó su vestido y más cuando lo prendió
D**I
Amazing dress .. highly recommend!!
Trustpilot
2 weeks ago
2 weeks ago