OMG! Stop over analyzing Disney Princesses! Growing up with these movies I never got any of these messages. Besides, in the end I'm my daughters' greatest female role model. We have fun enjoying this entertainment but in the end I teach my girls' values.
The idea of what is considered "beautiful" to society changes every five to ten years, but in some ways it's elements remain the same: it expects women to work towards acheiving whatever body image may be popular in the moment.