Zellweger is a three-time Oscar nominee who won for Best Supporting Actress last year for her performance in "Cold Mountain."
She was nominated for Best Actress for "Chicago" and "Bridget Jones's Diary." She is currently appearing in U.S. theaters in "Bridget Jones: The Edge of Reason," and co-stars with Oscar-winner Russell Crowe in the upcoming feature "Cinderella Man."
The 77th Academy Awards will be presented on Feb. 27 at the Kodak Theatre in Hollywood, in ceremonies to be televised live over ABC.
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