4. MILA KUNIS

This was the year that battle for "Best Friends With Benefits Movie" happened. Although Natalie Portman and Ashton Kutcher's No Strings Attached was a relatively worthy contender, Timberlake and Kunis' pointedly titled Friends with Benefits took the cake. The deciding factor: Mila Kunis. GQ's Woman of the Year and the Guys Choice Awards' "Holy Grail of Hot" winner was arguably the most sought-after women of 2011. So much so that a Marine sent her a YouTube invite to the U.S. Marine Corps Ball last month, and she's so cool, that she actually attended it.