Do animated female characters need to be pretty?

   Many believe that when they hear animated female they automatically assume that they're going to be tall skinny long exotic colored hair big breast and have all the wanted/ desires of a man's view on women.
   Christine Panushka professor of animation at USC agree that humans people that are not caricatures are difficult to animate anyway. But is it is technically harder to animate a woman? People ask in terms of skeletons and muscles and how we move, they're the same Panushka said.
    But by the looks of it it looks like they took the face of the main female character in tangled and just did some editing on the pigment of her face with the color of her eyes and adding freckles in low tones and just changed the name.

  Opinions:
   Even tho I'm a guy I think that when I see animated female character with big breasts that it's really just a Sextus man behind and editing program creating what he wishes to see in all females.
   And that I think that what Pixar is doing which is giving more movies with female leads that are animating dumb in not a sexist way – still shows beauty is a good way to get young girls confidence in the way they look.

Question:
  Why is it that Pixar is making the female lead looks so identical?