Anna wanted to be a mermaid this year. I was so surprised when she agreed to my kitty cat costume idea. It must have been the tail that sold her on it or the fact that it was a cat dress. As long as you let her wear a dress then she's a happy camper.
Lauren loved the pirate idea. We did have to go buy her a sword to go with her costume though. She kept trying to pick out the ninja/skeleton warrior swords that were twice her size. I finally convinced her to get a little one with a blunt end. You have no idea how much work that took. We have a little parrot for her shoulder too. She just told me this morning, however, that her pirate outfit isn't done...she says she needs an eye patch now. I guess when she gets into something, she's going to do it right!