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Oscars: 11 Past Best Actress winners

<div class="meta "><span class="caption-text ">Natalie Portman won the Academy Award for Best Actress in a Leading Role in 2011 for her role in &#39;Black Swan,&#39; marking the actress&#39; first win and second nomination. &#39;Black Swan&#39; follows the story of Nina &#40;Natalie Portman&#41;, a ballerina in the New York City Ballet trying to make it to the top position in the company. When artistic director Thomas Leroy &#40;Vincent Cassel&#41; decides to replace prima ballerina Beth MacIntyre &#40;Winona Ryder&#41; for the opening production of their new season, &#34;Swan Lake,&#34; Nina is his first choice. But a new dancer, Lily &#40;Mila Kunis&#41;, who already embodies the darker side of the ballet impresses Leroy and becomes Nina&#39;s competition. Nina and Lily develop a twisted friendship and Nina&#39;s reckless behavior threatens to ruin her life. The actress also received an Oscar nomination for her part in the 2004 movie &#39;Closer.&#39; &#40;Pictured: Best Actress Natalie Portman poses backstage during the 83rd Annual Academy Awards at the Kodak Theatre in Hollywood, CA on Sunday, February 27, 2011.&#41; (Todd Wawrychuk &#47; A.M.P.A.S.)</span></div>
February 23, 2012 6:18:14 PM PST