Pretty as in the most attractive female character in the movie.
She has some nice shots, but she can look odd due to the animation style.

She's nor pretty but she's not ugly either

I do

Not stunning, but definitely pretty.

I though this was going to be about Audrey from Atlantis xD

So did I

like her hair...

I don't really like the animation style very much, though..

what is she from?

^ The Lorax