In 2010, Natalie Portman and Mila Kunis rocked the movie theaters with their psychological ballet thriller, Black Swan. The film won Portman an Oscar for Best Actress, and it’s hard to believe that 15 years have passed since the women stepped into the physically and mentally challenging roles.

The filmmaker admittedly tried pitting Natalie Portman and Mila Kunis against each other while filming 'Black Swan'.

Darren Aronofsky recalled unsuccessfully trying to start a feud between Natalie Portman and Mila Kunis to ramp up the onscreen tension in 'Black Swan': 'They're both very clever and were instantly privy.