Rooney Mara Picture

Rooney Mara appeared in A Nightmare on Elm Street and The Social Network.

But she'll soon be close to an A-lister due to a different role: Mara beat out a number of major names to nab the lead in The Girl with the Dragon Tattoo. She'll being that best-seller to the big screen in December 2011.

This New York native is the younger sister of actress Kate Mara.