This is totally true especially when it comes to actresses either popularly considered extremely lovely, like Megan Fox or Angelina Jolie, or people whose faces are not classically good looking, like Sarah Jessica Parker or Kristin Stewart. Then you have the 'nerd approved' girls like Mila Kunis, Natalie Portman, etc. Notably the girls with the 'softest' type of beauty.

That said, people insult Kristin Stewart for her acting, her demeanor, her behavior, her roles, etc. So she's not the best example.