Shop Mermaid Costumes at Spirit Halloween to transform yourself into the most beautiful underwear creature! These mythical beings have entranced us for ages with the way they glide so gracefully through the water, able to tap into their human side and their fish side. Our mermaid costumes for adults include gorgeous shimmering scaled iridescent skirts and dresses. Add a mermaid wig and mermaid makeup and you’re all set! Or glam it up in our deluxe mermaid tail dress that’s sure to turn heads here on land. Our kids mermaid costumes will turn her into the perfect little sequestrian. Kids and adults can become the most famous pop culture mermaid around, Ariel from The Little Mermaid, in official costumes that showcase her beauty and style. Shimmer your way through the holiday or any costume party as a stunning mermaid, captivating everyone in her path. These are part of Spirit’s wide range of Halloween costumes for everyone in your household!