By Leah Ornstein - Breaking Celebrity News Style & Beauty Editor

From the red carpet of the hottest events and movie premieres to the city streets, Hollywood’s hottest stars were dressed to rock and shock in the best, worst and wackiest fashions – and Breaking Celebrity News has all the photos in our weekly feature.

Blake Lively rocked the most Gossip-worthy look of the week at the launch of Jason Wu for Target. The fierce fashionista dominated the stylish soiree in a Jason Wu peplum dress, which showed off her superior stems, Christian Louboutin FiFi heels and Lorraine Schwartz bling.

Madonna failed to hit the high note at the NYC premiere of her movie W.E. The singer-turned-actress-turned-director looked more like a matronly socialite in a pouf sleeved Marchesa gown than the original Material Girl!

As for wacky, Redfoo of LMFAO definitely grabbed attention at the Sundance Film Festival, wearing his trademark neon and animal print garb all over Park City.

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