PHOTOS: The Best, Worst and Wackiest Fashions Of The Weekend

June 13 2011, Published 5:08 a.m. ET

From charity benefits in Los Angeles to summer concerts in London, and all the way to a film festival in China, Hollywood’s hottest stars caused wonder and confusion over the weekend in the best, worst and wackiest fashions and RadarOnline.com has all the photos.

Tron: Legacy star Olivia Wilde won the effortlessly chic award when she pulled her heavily-banged hair back into a sexy messy high pony tail that framed her cat-like eyes and flawless complexion at the 10th Chrysalis Butterfly Ball in Los Angeles on Saturday. The actress, who next appears in Cowboys and Aliens with Daniel Craig and Harrison Ford, will have sci-fi geeks falling at her feet when they see her in this ethereal floor-skimming Yigal Azrouel Resort 2012 pattern gown with capped-sleeves.

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Jennifer Lopez opted for a head-to-toe pattern too but with very different results. In a snakeskin dress and thigh-high Louboutin boots, the Anaconda star looked like she’d skinned one of the giant reptiles at the Summertime Ball at London’s Wembley Stadium on Sunday. All judges unanimously agreed that the American Idol star’s look missed the mark.

From the good and the bad to the plain wacky, Glee star Heather Morris didn’t know if she was running a race or dashing to class when she paired short running shorts with school girl knee high socks and heeled boots in Toronto on Friday. Add a splash of bright red lipstick, and she really looks like a little girl who is playing dress in her mom’s closet.