Vincent Cassel, Winona Ryder and Barbara Hershey have joined the cast of Darren Aronofsky's "Black Swan" reports /Film.

The story centers on veteran ballerina Nina (Natalie Portman) who finds herself locked in a competitive situation with a rival dancer named Lilly (Mila Kunis), with the stakes and twists increasing as the dancers approach the ballet school's next big production, a new version of "Swan Lake".

The veteran however is unsure if the rival is a supernatural apparition or if she herself is simply having delusions.

Ryder will play the outgoing lead ballerina whose role everyone is vying for, Cassel will play the production's sinister director, and Hershey will play Nina's mother.

Distribution has yet to be locked down for the project.