Mila Kunis is in negotiations to star opposite Natalie Portman in Darren Aronofsky's upcoming thriller "Black Swan," according to the Hollywood Reporter.

Portman plays an experienced ballerina who's having a hard time dealing with a rival dancer (Kunis). As the story develops, however, Portman's character is not exactly sure whether what she sees and experiences is real.

The charming and talented Kunis will also soon be seen in Mike Judge's "Extract." Her recent big-screen appearances include "Forgetting Sarah Marshall" and "Max Payne." Oh yeah, she'll also star in "The Book of Eli."

John McLaughlin wrote the original script for "Swan," which Mark Heyman rewrote. Aronofsky recently helmed "The Wrestler."