Hilton and Leto seen kissing at party

Paris Hilton has been photographed kissing actor Jared Leto at the Sundance Film Festival.

The socialite cosied up to Leto, 36, at the Myspace Music night at Park City in Utah.

A source told PageSix: “Paris and Jared are not dating seriously. But this is not the first time they have made out - there just weren’t any cameras around before. She likes him and she thinks he is really sexy and fun.”

Leto dated Cameron Diaz for four years and was later linked to Lindsay Lohan and Ashley Olsen.

Olsen recently denied reports that the couple had reunited after they were seen smooching at a party in LA.

US reality TV star Brody Jenner also dismissed claims that he kissed Hilton on New Year's Eve.