In 'Black Swan,'Natalie Portman plays Nina, a star ballerina, who is given the chance to compete for the lead part in a prestigious New York production of 'Swan Lake.' But Nina's chaste timidness prevents her from fully embracing the role's dark, sensual side, and she may lose out to her rival -- the unabashed and extroverted Lily (Mila Kunis). As Nina and Lily's competition gets more heated and brazen, Nina is forced to tap into her own dark nature to win the performance.
In this exclusive clip from the movie, Nina's trip into her wicked side takes a bizarre, head-scratching twist. Check it out after the jump.