Justin Bieber strolled into a fancy formal party in Cannes … but he was dressed for a backyard barbecue on the Florida panhandle. Bieber was a guest at Roberto Cavalli ‘s annual Cannes yacht party, where everyone was dressed for a high-end evening … except for the Biebs. While John Travolta showed up in a tux, Bieber opted for a denim vest with a jersey, a pair of baggy shorts, super casual slippers, and no socks. On a positive note … he was wearing a shirt.
