Well, JUST for the sake of starting things off, not because this is the best match in the world. It was just the first one that came to mind, but I think Brenda Song could pull off a Mulan look.

Here's a little collage I made :)

Snow White - Chae rim
Cinderella - Dianna Agron
Aurora - Blake Lively
Ariel – Rachel McAadams (if she had red hair)
Belle - Leighton Meester
Jasmine – Megan Fox
Pocahontas – Naya Rivera
Mulan – Brenda Song
Tiana – Meagan Good

^ I agree with all of them (:

Oooh, I LOVE Blake Lively as Aurora! xD I'm not sure about Megan Fox for pocahontas, though.....hm.

^^ Megan Fox is for Jasmine, Naya Rivera for Poca :) They do kind of look alike, though!