Jodi Benson, the voice of Ariel, recorded “Part of Your World” in a dark room in order to mimic the ~mood~ of the princess’s secret grotto.
Belle is the only person in her village who wears blue, which underscores her difference — and in fact, she was drawn to look like Dorothy from The Wizard of Oz, an outsider who also wears a blue dress.
Jasmine is the only princess to kiss a villain.
Walt Disney himself said that Cinderella was his favorite heroine because “There’s something about that story I associate with.”
And finally, Cinderella’s dress transformation was Disney’s very favorite piece of animation.