15. Sienna Miller
Sienna Miller's ex-husband, Jude Law, is a confounding man. Why, when you have a woman as beautiful as Miller, would you sleep with the nanny? Yes, the nanny is a tempting fantasy paradigm, but who needs anyone else when Miller sleeps next to him? Perhaps she was just too hot and Law was overwrought. We will never know.
What we do know is that Miller, who starred in G.I. Joe: The Rise of the Cobra and Factory Girl, is not just sexy, but also outspoken. The model/actress/designer is also the Global Ambassador for the International Medical Corps and was a major participant in the News International phone hacking inquiry. Clearly, Miller has got the looks and the spunk, leaving us as baffled over Law's wandering eye as ever.