Aw, another tough one... I would say Scarlett wins my vote for this one. I first saw her in Lost in Translation and was star struck by her beauty. She is the classic American beauty... With blond hair, curvy body and charming personality. She is still relevant right now, with movies like The Avengers and even more recently, The Ghost in the Shell. She has made many more movies, being relevant throughout the years.
What I love about her is that she has curves, not all women has that. She isn't just skinny. She can actually act and she's good at it. She wins this round for me, sorry Amber!