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

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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.
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