What's wrong with a little rib? Nothing. And there's nothing wrong with a little (key word: little) chunkiness, either. I draw my parameters between "gaunt face/neck" and muffintops, respectively.
Of course, that's just my opinion.
I like Annie from Community. Not the actor, Alison Brie, but the character she plays on Community. Like, I don't find her that attractive in real life or in Mad Men, just in Community.
Too skinny, huh? Let's take a good look at one of your choices.
I'm going by face and voice in deciding sexiness (because it's not porn actresses - seeing them naked is unusual anyway)... Trachtenberg is good looking with some shirt on. That pic you posted of her isn't appealing to me, and was what I commented on (this was not apparent in my post, I know, sorry). Still, ick, ribs, ick D: *flees*
Oh yes. And it's HAWT!
So I should add you to the list of guys I have drooling over me? Sheez. Why can it never be girls. T T