1937-1959 Princesses: Snow White, Cinderella, Aurora
"We are passive, temperate and the classical ideal of beauty. We're dreamers waiting for our princes to come"
1989-1982 Princesses: Ariel, Belle, Jasmine
"We're curious, rebellious, and adventurous. We have budding independence but we still need rescuing"
1995-2009 Princesses: Pocahontus, Mulan, and Tiana (even if two of them aren't really princesses.)
"We are gutsy, stubborn, and have strong convictions. We're the heroes of our own story."
IMHO, I think the princess movies got less and less fairytale like as the years went on.