People who say they can't lose weight are lying': Mila Kunis on how losing 20lb for Black Swan changed her views on body imageBy Daily Mail She shed an astonishing 20lb from her already slim frame to play a ballerina in Oscar-winning movie Black Swan.And now Mila Kunis has admitted losing the weight has entirely changed her views on body image.The 27-year-old actress, a self-confessed 'foodie',