'Black Swan' Trailer: Natalie Portman & Mila Kunis KISS (VIDEO)

Below is the trailer for 'Black Swan,' Darren Aronofsky's ballet thriller follow-up to 'The Wrestler.'

Natalie Portman and Mila Kunis play competing ballerinas and share a highly-anticipated kiss, which is also in the trailer.

The film will premiere at the Venice Film Festival September 1.