By Leah Ornstein - Radar Style & Beauty Editor
From the hottest movie premieres, fashions shows and music festivals to the city streets, stars were dressed to rock and shock in the best, worst & wackiest fashions and RadarOnline.com has all the photos in our weekly feature.
The most talked about trendsetter of the week was by far The Duchess of Cambridge, who rocked one fabulous look after another. From tres chic designer dresses to figure-flattering cowboy couture, Kate's Canadian fashion was absolutely flawless by international style standards!
The Duchess wasn't the only one to delve into western wardrobe! Cher stripped off her fishnets and leather separates and opted for a brand new look at the Los Angeles premiere of Zookeeper resulting in a major fashion flop!
As for wacky, Helena Bonham Carter was up to her usual tricks at the London premiere of Harry Potter and the Deathly Hallows: Part 2 pairing her emerald green, asymmetrical gown with faux pas floral topper, a 'Glamour Girl' purse and of course, he sunglasses.
Other top contenders this week include Anne Hathaway, who looked princes-like herself at Haute Couture Fashion Week in Paris wearing two divine Valentino gowns, Jennifer Aniston, who made an a la mode mark at her Hand and Footprint Ceremony in a floral Prada frock, and Emma Watson, who cast a spell at the Harry Potter premiere, wearing an absolutely breathtaking Oscar de la Renta gown.
For all the best, worst & wackiest fashions of the week, click here.