I can't find it but I read a very interesting article written but a child psychologist explaining why Frozen was so successful. I'm not going to go into detail because its 5 am, but basically the article said that a lot of kids really got the accept who you are message behind the film and they find it empowering. The film even goes so far as to make fun of Disneys old formula when the guy gives Anna a hard time because she was going to marry someone she just met.