I think Keira Knightley is really pretty but she's wayy too skinny. Personally, I don't think this is attractive:
http://www.kkwavefront.com/media/alb...ss0133_kkw.jpg
Wayy too skinny. She looks like a 12 year old girl.
I'd rather see someone like Scarlet Johannson pose naked. She's very pretty and actually has some curves. (she was the girl in Lost in Translation and Girl with a Pearl Earing among other things....here are some pictures of her:
http://www.scarlettjohansson.org/mul...?image_id=3729
http://www.scarlettjohansson.org/mul...?image_id=3730
http://www.scarlettjohansson.org/mul...?image_id=5913)