Paris Hilton Caught Kissing Paul Iacono

Hotel Heiress Paris Hilton was caught kissing the star of her future brother-in-law's new TV show backstage at the MTV Movie Awards  on Sunday night, June 6.

Paris was snapped smooching with actor Paul Iacono, who stars in David Katzenberg's new TV project "The Hard Times of RJ Berger".

A party guest says, "We thought it was a publicity stunt at first, but Paris was really making out with this guy."

Paris' siter, Nicky Hilton, is Katzenberg's longtime girlfriend, has sparked rumor that the young actor is her latest man.

She writes on her Twitter, "My new boy toy is hot," and links to a picture story about her night of passion with Iacono.