Natalie Portman has admitted that she found the preparation for her new movie Black Swan 'difficult'.
She take on the role of a ballerina in Darren Aronofsky's latest project and she underwent a strict diet and training regime to be ready to take on the role.
Speaking to People the actress said: "It wasn't really giving up [food]. It was just smaller portions. It was more quantity than a particular thing," she told People.
"Working five to eight hours a day for a year... it's what real dancers live through. It was an amazing experience, but definitely a difficult one."
But it seems like all of the hard work as paid off as the movie won over the critics on the festival circuit and has been tipped for huge success this awards season.
The movie is already a heavy favourite for the Oscars when they roll around in the new year.
Black Swan is released 21st January.
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