PHOTOS: The Best, Worst & Wackiest Fashions Of The Week

May 21 2011, Published 8:45 a.m. ET

From the glam-packed red carpet of the Cannes Film Festival to the streets of London, Florence and Paris, Hollywood’s hottest stars were dressed to rock and shock this week—and RadarOnline.com has all the photos in our weekly roundup.

Bar Refaeli knows that the best way to get over a break-up, is to get gorgeous! The Israeli supermodel hit the French film fest in high style, hitting every premiere and soiree in designer duds to-die-for. We LOVED every look that Leonardo DiCaprio’s supermodel ex galpal rocked, but her style high was achieved at the premiere of Mel Gibson’s latest flick The Beaver. The blonde beauty showed off every curve in a dark and dangerously tight Roberto Cavalli gown.

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Snooki and friends jetted over to Italy, bringing their trademark Jersey Shore style with them. The sassy-mouthed star experienced a boardwalk blunder in Florence, hitting the streets in wild style, while Deena Cortese freaked up the streets in a touristy t-shirt—which was splashed with a naked man’s body!

Crazy couture was plentiful, with Lady Gaga wearing a My Little Pony doll around her neck and Jennifer Lopez hitting the stage in a webbed catsuit, but the wacky winner of the week was not a person, but a primate—Crystal the monkey, hit The Hangover II premiere, wearing a pink halter gown!