A friend of mine did Belle a few years ago (it's a freaking amazing dress, and the petticoat was HUGE), and I did Snow White. I think our official excuse was Kingdom Hearts...
I saw a Snow White last year at Doubletree and up at Sakuracon, and in the skit green room this year.
Also unless this was already done before by California cosplayers, what if an intrepid band of Disney cosplayers went to Disneyland and met face to face with their employed counterparts?
If I can get the right clothes, I can pull off Prince Eric, and maybe Aladdin. Maybe the Shriners have a chibi fezz I can borrow. Arrgh, now I'm having to tap into remembering what pure Disney was like. Power Rangers and KH don't count. Pinocchio, Pochohontas, Robin Hood, Toy Story, Sleeping Beauty as Prince Philip, Davy Crocket??
Zorro maybe, Eddie Valiant (Who Framed Rodger Rabbit).