Paris Hilton's boyfriend River Viiperi was forced to get physical with an overzealous fan in France on Friday (17May13) after the woman repeatedly grabbed at the socialite in a bid to get close to the reality TV star. The hotel heiress, who arrived in Cannes last week (begs13May13), had to fight her way through crowds and members of the paparazzi as she made her way to a party with her beau, and one female even took hold of the blonde beauty's arm in an effort to land a photo with her idol. Her actions prompted Viiperi to push the woman away twice and shout, "Don't touch her!", but she appeared unfazed by his outburst and continued to follow the couple. Video footage of the incident depicts Hilton struggling to keep security guards from stepping on her dress, while she finally loses her cool with the unruly woman and snarls, "Leave us alone", before heading into the party venue.