George Clooney has been showing off a new love interest at the Venice Film Festival - Sarah Larson. Just days after he was rumoured to be dating Croatian supermodel Monika Jakisic, the actor has stepped out at the Italian event with stunning brunette Larson, whose background is a mystery. The pair were inseparable and kissed openly at the bash, where Clooney is promoting his new movie Michael Clayton.The actor also used the film festival threw his weight behind Barack Obama's White House campaign, describing the presidential hopeful as "like a rock star". Clooney is at the event promoting his new movie, legal thriller Michael Clayton, but used the platform to praise the man he hopes will become America's first black president.The actor said, "You've been in a room once in a while with a rock star. "He walks into the world, and he takes your breath away. I'd love him to be president, quite honestly.

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