Mila Kunis was happy to go back to her normal body size after working on ‘Black Swan’.

Mila Kunis was happy to go back to her normal body size after working on ‘Black Swan’.

The actress – who stars opposite Natalie Portman in the Darren Aronofsky – directed psychological thriller about a troubled ballet dancer – had to lose weight to become a typical dancer in the film, but was grateful to stop working out when it had wrapped.

She said: “To be able to pretend to be a ballerina for five months was great – but boy, was I happy to get out of that life.”

However the Hollywood beauty did enjoy the “challenge” of becoming so physically fit.

She said: “The best part was the challenge of it, the challenge of changing your body.”

Natalie – who won the Best Actress Oscar for the role earlier this year – worked out for eight hours a day to get as thin as she could to play a dancer.

Discussing it recently, she said: “You are constantly putting your body through extreme pain, so you get that understanding of the self-flagellation of a ballet dancer.”