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Benjamin Millepied, Natalie Portman welcome a son

Natalie Portman and Benjamin Millepied arrive at the 83rd Annual Academy Awards on Feb. 27, 2011, in Hollywood, Calif. Getty

(CBS) It's a boy for Natalie Portman and her fiance, Benjamin Millepied.

The actress, who won an Oscar for her role in "Black Swan" earlier this year, has given birth to a son, People magazine reports.

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Pictures: Benjamin Millepied

No other details have been released.

Portman, 30, met the French-born Millepied, a choreographer and principal dancer with the New York City ballet, on the set of "Black Swan."

She thanked Millepied when she accepted her Academy Award for best actress back in February.

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"My beautiful love Benjamin who choreographed the film," she said. "He's given me most important role of my life."

Portman and Millepied announced in December that they were engaged and expecting their first child.