Apparently Emma Stone (Easy A, SuperBad, ZombieLand, Ghost of Girlfriends Past) is up for the role.
The only 2 worries I have is that she does seem to do some of her lines with some sarcastic tone and if they were to go the model route with the character it just wouldn't fit with her girl next door look.
Not going to comment on her hair not being red...
She would be a great addition to the film.
The Disgruntled Greek
I think that is a great cast. I also think Ive seen her with red hair in a movie (but I cant remember which).