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Oscar telecast producers Bruce Cohen and Don Mischer announced that the stars would appear on the show, according to The Hollywood Reporter.
Other celebrities due to present at the Oscars include Robert Downey Jr, Hugh Jackman, Annette Bening, Jude Law, Reese Witherspoon and Oprah Winfrey.
James Franco and Anne Hathaway will host the awards show, which will air on ABC on February 27.
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