Answer. Natalie Portman. Portman has had some successful movies but she has never been considered a box office threat, but now she clearly is with The Black Swan crossing the $80 million mark (it only cost $13 million), and her new romance with Ashton Kutcher No Strings Attached opening at number 1 for the weekend with a little over $20 million (it cost $25 million to make.)
Let's not forget to give a big cheer of congratulations to Fempire member Elizabeth Meriwether for her success. Hope she gets lots more writing gigs.
What did people think of No Strings Attached?