Last week, at The Black Swan’s New York premiere, Vulture caught up with Mila Kunis to talk about the hard parts of turning into a ballerina. “I think the physicality of having your body look a certain way,” Kunis told us. “I mean, actresses are skinny to begin with, but to get en pointe and not break your ankle, you have to have a certain amount of muscles to sustain your body and no fat whatsoever. The ballet world, they are fit. They are little rocks. They just have no fat on them whatsoever. [After the movie] my stomach was a little bit on the rocks for a time. It was a little hard to go back to eating the way that I normally eat. You know, human portions and not little bird portions.” For more celebrity quotations, click through our Party Lines slideshow.