Fresh off her Independent Spirit Award on Saturday, Natalie Portman has won the Best Actress Academy Award for her role in "Black Swan."

She was previously nominated in 2005 for her supporting role in "Closer." She lost to Cate Blanchett who played Katharine Hepburn in "The Aviator."

In January, she won the Golden Globe Award for Best Actress in a Motion Picture – Drama.

Portman's breakout role was in 1994's "The Professional." She starred as an orphan adopted by a gentle hit man. By the '90s, Portman had major roles in such ensemble films as "Beautiful Girls" and "Anywhere but Here" She was eventually cast in 1999 as Padmé Amidala in the long-anticipated "Star Wars" prequel trilogy.

"Black Swan" is a psychological thriller directed by Darren Aronofsky ("The Wrestler"). Co-starring Vincent Cassel and Mila Kunis, it delves into the lives of two dancers (Kunis is the other) who is performing in a production of Tchaikovsky's "Swan Lake."

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