Sizzlin' Pics: The Hottest 25 Stars Who Are 25 & Under!
Image courtesy: Fredrick M. Brown/ Getty Images
More from this gallery
Rooney Mara (25)
What's She Done: Viewers have seen her in 'Youth in Revolt' (2010), 'A Nightmare on Elm Street' (2010) and as Mark Zuckerberg's slighted ex-girlfriend in last year's hit 'The Social Network.'
What's Next: Mara will take on the role as Swedish computer hacker Lisbeth Salander in the film adaptation of Steig Larsson's international best-selling book of the same name, The Girl with the Dragon Tattoo, directed by David Fincher.
