The Disney film of the Beauty and the Beast (1991) is until now my favorite Disney film with Princesses*. I think it is because Belle starts by being just a normal and intelligent girl than has different ambitious than other inhabitants in her village. I kind of feel identified with her story and with the fact that she loves books.
In 1994 I bought my Beauty and the Beast tea set in Disneyland Paris and since then I have been collecting nice things related to the film.
* My very first favorite Disney film is however The Incredibles (2004)