Anyone have creative Little Mermaid Costume?

All of my friends and I are being Disney characters for halloween, and because I have red hair, I got Ariel, the Little Mermaid. I don't want to be cliche, with a dumb little kid's costume, but I also want it to look like I am Ariel. So, if you have any costume ideas that fit my picky guidelines, please let me know. Thank you!