Natalie Portman's Post-"Black Swan" Diet: Carbs, Carbs, Carbs

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Natalie Portman worked out and trained like a dancer for a year to fit into her leotards for the movie Black Swan.

The strict fitness regimen had the slim actress eating a bunch of carbs after the movie wrapped. She told PEOPLE of her post-Swan diet at the film's Tuesday premiere at New York's Ziegfeld Theatre.

"It was just pasta and bread and pizza all the time."

As for her diet during the movie, it was a matter of portion control.

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"It wasn't really giving up [food]," Portman, 29, says."It was just smaller portions … It was more quantity than a particular thing."