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

Dec. 18 2010, Published 6:09 a.m. ET

It was a big week for Hollywood's hottest stars, as they filled the red carpet and the streets with the best, worst and wackiest fashions. RadarOnline.com has all the rocking and shocking photos in the weekly feature, where no celebrity is immune to an arrest by the fashion police.

Click the next sentence to find out who made the list!

Reese Witherspoon brought her sweetheart style to the Los Angeles premiere of her holiday movie How Do You Know. The blonde babe (who should be sporting some bling on her ring finger sometime in the near future!) hit the red carpet in a curve hugging Zac Posen mini from the Spring 2011 collection, which featured sheer panels and pink feather details. Paired with YSL Tribtoo black patent pumps, Reese was definitely dressed to thrill!

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And just when we thought we had seen the worst of it (it being Cher's nipple disaster in Madrid) the Burlesque star hit the press line at the London premiere of her dancing movie in totally hideous fashion. Wearing an orange wig a la Vivienne Westwood and an ill-fitting, too revealing Julien Macdonald dress, the icon took the look to an all time low, by revealing strips of tape on her neck.

Gwyneth Paltrow was definitely Country Strong at the Los Angeles premiere of her latest flick, defining the term 'white hot.' Flawlessly faced with her hair stick straight and glossy, the beautiful blonde showed off her toned and taut bod in curve-hugging Emilio Pucci gown, which featured cutout sides and cutout back. Gossip Girl Leighton Meester also looked fab fab fab, wearing a frilly and fem Christian Dior frock, which she paired with brightly hued wedge sandals.