Oh gosh there's a lot of pretty out there, prettiest in my personal opinion is hard to narrow down but these are the four that I think are some of the prettiest I've seen in Hollywood Land, I tend to find exotic brunettes very pretty...
Left to Right: Natalie Portman, Mila Kunis, Jaimie Alexander, Adriana Lima
But I have to say that overall all time beauty in Hollywood would still have to be the legendary Ms. Audrey Hepburn <3 !