Natalie Portman and Mila Kunis reflect on how Darren Aronofsky tried and failed to push a rivalry between the two stars on the set of 'Black Swan'

"My take is that I was trying to be a sneaky director and make them argue," the director told Vogue ahead of the film's 15th anniversary

Darren Aronofsky admitted that he tried to start a feud between Natalie Portman and Mila Kunis during Black Swan. Portman said that she was "separated" from her costar for most of production. Kunis said the two actresses quickly "figured out" the filmmaker's scheme.