By Leah Ornstein – Radar Style & Beauty Editor

From the swankiest red carpet soirees to the city streets, Hollywood’s hottest stars were dressed to rock and shock on Thursday – and RadarOnline.com has all the photos.

Is Sandra Bullock looking for love?  The bigscreen bombshell, who usually keeps a low profile on the red carpet, showed off a sexier side at the 2011 amfAR Inspiration Gala in Los Angeles sponsored by Grey Goose, leading us to believe that maybe the drop dead gorgeous divorcee has a new man to impress. The Blind Side star rocked an uber embellished AllSaints dress with a Stella McCartney blazer and Jimmy Choo heels to the charitable event.

PHOTOS: The Best & Worst Dressed Stars Of Thursday

Debbie Harry and Sinead O’Connor, on the other hand, were dressed to shock at the bash. While the Nothing Compares 2 U singer showed off her wacky tattoos in a skintight purple number, the Blondie singer had a bad plaid attack, making matters worse by adding knee-high fishnet tights.

Over in New Delhi, Lady Gaga stunned at a press conference, wearing a gorgeously hued, Naeem Khan one-shoulder watercolor gown, which perfectly matched her multi-colored hair, while Jessica Biel experienced a Dynasty disaster at the Fashion Group International’s 28th Annual Night of Stars in
NYC, in Giambattista Valli Couture.

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What other stars were dressed to rock and shock on Thursday?  Find out by clicking here.

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