By Leah Ornstein - Radar Style & Beauty Editor
From the swankiest soirees in the world to the city streets, stars were dressed to rock and shock in the best, worst and wackiest fashions - and RadarOnline.com has all the photos in our weekly feature!
Kate Middleton was by far the most talked-about trendsetter during her visit to Tinseltown. The Duchess of Cambridge was dressed to impressed throughout her stateside stay, but her best look of all was at the BAFTA Brits To Watch event, when she hit the red carpet in a gorgeous, lavender Alexander McQueen gown. Blake Lively was also dressed in Gossip-worthy getup, looking angelic in a Marchesa gown, while JLo looked too sexy for the royals in a cutout Emilio Pucci number.
Roseanne's Nuts when it comes to fashion! The comedic actress was out in full-force this week promoting her new show, but the powerful personality could have used a little assistance from a stylist.
And though Lady Gaga was dressed to shock as usual, the wackiest look of the week was courtesy of aerobics king Richard Simmons, who decorated himself in colored pom-poms for his birthday.
At the ESPY awards, Brooklyn Decker and Amber Heard scored best dressed status, while Emma Watson went on a Harry Potter style streak in NYC.
What other stars were dressed to rock and shock this week? Click here to find out.