Disney- Anastasia was NOT originally a Disney princess. She was created by Don Bluth and the movie was released through Century Fox. In April 2015 Disney bought the rights to Anastasia finally making her an official Disney Princess.
I am so sick of these new generation disney movies thinking they are better. Old school disney paved the way for these newly animated disney movies. Suck on that Frozen! But Frozen was still a really good movie.