I'll go with Sara Jessica Parker. I've been wondering what's so attractive about her for years now. maybe I just haven't seen any decent pictures of her, but her cheeks make me think of the scream.
Oh, and I'll add Paris Hilton.
Olsen twins look like scrawny teenage girls, sure.
most of the rest named in this thread are bland, but not terrible, which I guess would make them unattractive.
Uma is attractive, in her own way.
But I can't agree about the Williams sisters. Faces aren't so hot, sure, but that doesn't matter when you've got an ass like they do. Someone please post the Williams/Friday pic.