Amazon.com: Ariel Costume for Kids, Deluxe Official Disney The Little Mermaid Live Action Costume with Accessories, Child Size Extra Small (3T-4T) : Clothing, Shoes & Jewelry
DIY Mermaid Costume...with a REPOSITIONABLE Fin!
Toddler Flounder Costume - The Little Mermaid - Spirithalloween.com
Kid's Little Mermaid Live Action Deluxe Ariel Costume