Darren Aronofsky seems firmly committed to making his supernatural ballerina thriller Black Swan as his post-The Wrestler movie, as The Hollywood Reporter say hottie Mila Kunis has joined the cast as Lilly, the film's antagonist. Last month Natalie Portman, an actress Aronofsky has been circling for years now became attached to play the lead, as the New York City Ballet dancer who is is tormented by a rival (Kunis) who may or may not be a figment of her imagination. Hopefully this isn't a Sixth Sense situation and the trades haven't blown the load on the third act plot twist. Swan is set to begin shooting in the fall in New York if a financier can be found. Universal owned the property back in 2007 but later pulled out. Aronofksy's Protozoa Pictures is producing with Mike Medavoy's Phoenix Pictures, and it's expected that Fox Searchlight could distribute.