Well, here's some pics for starters. And, a girl named Jennifer Walcott. Hard to find an appropriate picture; do a Google search and see for yourself.
out of this list and probably all celebrities, definitely jessica alba. elisha cuthbert needs to be on there though.
I voted for the anonymous Miss Universe, strictly based on the pictures you posted, though. Plus my wife is with me so I can't pick anyone she's heard of.
As far celebrities/well-known women in show biz, I would pick Beyonce as on the top of my list, but the most beautiful face of any woman I have ever seen is still Mariah Carey. As far as those on the list, I can't really pick one, because I like certain features of each of the women listed. Jolie's eyes are intoxicating, you can get lost in them for hours on end and lose track of time. Salma has the best body shape, but she is getting up there a bit in age (most of them are actually). Zeta Jones has the cutest overall face. But again, if I had to choose one girl only it would be Beyonce, followed by Cuthbert (that "Girl Next Door" movie, and look, completely sold me on her, she is adorable ). But THE prettiest women are not that well-known, besides how do you define "pretty". Afterall, beauty IS in the eye of the beholder