25+ Halloween Costumes That'll Channel Your Kid's Inner Little Mermaid By Murphy Moroney Published on Oct 17, 2017 at 2:56 PM ...

Mermaid Mermaid CostumeAmazon. For those who want a classic to rock this Halloween, there’s a pink, detailed mermaid costume perfect for your kid!

Little Alidy thinks her babysitter is a real mermaid on account of her pink hair. This 3-year-old’s day was made when her babysitter whipped out a mermaid costume to match hers.