Darren Aronofsky (Pi, The Wrestler, The Fountain, Requiem for a Dream) has expanded the cast of his upcoming flick, Black Swan.

Vincent Cassel, Winona Ryder, and Barbara Hershey join the previously announced Natalie Portman and Mila Kunis for the film which centers on a veteran ballerina (Portman) who finds herself locked in a competitive situation with a rival dancer, with the stakes and twists increasing as the dancers approach a big performance. But it’s unclear whether the rival (Kunis) is a supernatural apparition or if the protagonist is simply having delusions.

Tags: Barbara Hershey, Black Swan, Darren Aronofsky, entertainment, film, Mila Kunis, movies, Natalie Portman, Pi, Requiem for a Dream, The Fountain, the wrestler, Vincent Cassel, Winona Ryder