The Best, Worst & Wackiest Dressed Stars Of The Week

March 3 2012, Published 8:03 a.m. ET

By Leah Ornstein - RadarOnline.com Style & Beauty Editor

From the red carpet of the 2012 Academy Awards to the city streets, Hollywood’s hottest stars were dressed to rock and shock this week in the best, worst and wackiest fashions – and RadarOnline.com has all the photos in our daily fashion feature.

Angelina Jolie’s leg was the hottest topic at the Oscars, but Brad Pitt’s parodied baby mama was not our Best Dressed pick of the red carpet. The Help star Jessica Chastain dazzled us with her beauty, looking like she belonged in a museum in her black and bronze Alexander McQueen gown. The 30-year-old thespian finished off the look with $2 million worth of Harry Winston jewels, including yellow diamond bracelets, earrings and a ring.

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What a stud? Rihanna hit the streets of London, overdoing it in denim. The sassy singer paired ridiculously studded denim shorts with a darker denim shirt and a denim jacket tied around her waist, finishing the impossible to miss look off with the highest thigh-high boots we’ve ever seen and a baseball hat.

As for the wackiest look of the week, Sacha Baron Cohen’s character The Dictator definitely provided the most shocking style. Wearing his military garb, which he claimed was courtesy of disgraced designer John Galliano, the comedian proceeded to spill the ashy contents of his urn all over Ryan Seacrest’s designer suit!