20022 Halloween Costume Ideas

Adult Fionna Costume

Adult Fionna Costume By: Rubies Costume Co. Inc for the 2022 Costume season.

$48.99

We like Finn, but there are some jobs that he can't handle, like squaring off against the Ice Queen. For jobs like that, Fionna's the girl for the job (partially because Ice Queen only exists in her reality and not Finn's, and partially because she's mathematically awesome). This costume recreates the Adventure Time character perfectly, so all you need to do is find a magical shapeshifting cat to come along with you on your adventures.

By Rubies Costume Co. Inc