Sienna Miller

This Layer Cake and Factory Girl starlet will play one third of a love triangle (with Keira Knightley and Cillian Murphy) in The Edge of Love and, in a completely different vein, the Baroness in 2009’s G.I. Joe movie. By the way, did you know Sienna won $75,000 from British tabloids that violated her privacy by running photos from a movie nude scene?