Change-Up Cuties & Cut-Off Catastrophes – The Best & Worst Dressed Stars Of The Day

Aug. 2 2011, Published 4:10 a.m. ET
By Leah Ornstein - RadarOnline.com Style & Beauty Editor
From the Los Angeles premiere of one of this summer’s hottest comedies to the streets of NYC, stars were dressed to rock and shock this Monday – and RadarOnline.com has all the photos.
At The Change-Up premiere, Leslie Mann looked white hot in a Marchesa cocktail dress, while Olivia Wilde opted for a red hot Antonio Berardi number. Ryan Reynolds’ pal Sandra Bullock made an understated appearance on the carpet, rocking a snazzy Lanvin jumpsuit with oodles of cool jewels.
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Mischa Barton landed herself the worst look of the day, looking like she had a bad encounter with a paper shredder in Los Angeles in her crazily cut up jean shorts.
A la mode misses included Lady Gaga, who went overboard in Salvatore Ferragamo houndstooth print, and Dianna Agron, who committed a style sin by wearing velvet in the summer.
For all the rest of the best and worst looks of the day, click here.