By Leah Ornstein - Radar Style & Beauty Editor
From the red carpet of the hottest movie premieres, the swankiest soirees and most exclusive events to the city streets, Hollywood's hottest stars were dressed to rock and shock in the best, worst & wackiest fashions and RadarOnline.com has all the photos and details in our weekly style feature.
It was a great week for The Girl with the Dragon Tattoo star Rooney Mara. The stunning breakout star went on an unparalleled style streak, showing off her gorgeous bod in several cutout looks. She started off the week at the world premiere of the highly anticipated film in London, hitting the carpet in a white hot Givenchy Couture gown from the Fall 2011 collection, which featured a cutout back and impeccable embroidery. Then, at the Stockholm premiere she showed off her marvelous in a Roksanda Ilincic cutout jumpsuit with Brian Atwood pumps. She completed her style streak at the New York premiere where she dominated in a craftily cutout Prabal Gurung Spring 2012 sheer-back number with Christian Louboutin heels.
Pippa the Puritan? The usually flawless and hot bodied Middleton sister experienced a fashion faux pas, heading to work in a black and white bibbed dress that didn't do her any favors.
As for wacky, Steven Tyler was up to his old attire antics at the American Idol auditions in Los Angeles. The Aerosmith rocker missed the a la mode mark in shredded lace-up bell-bottom jeans, snaky cowboy boots, a silk top and lots of feathers and fringe all around.
Sandra Bullock showed off her new and improved figure in Alexander McQueen at the New York premiere of Extremely Loud and Incredibly Close, while Scarlett Johansson steamed up the premiere of We Bought A Zoo in a two-piece Dolce & Gabbana bustier dress.
For the rest of the best, worst & wackiest fashions of the week, click here.