Jennifer Lopez Grade: A

The "American Idol” judge dared to bare … and it paid off. Lopez’s plunging Zuhair Murad gown not only caused a ruckus on the red carpet, but during the Oscar broadcast as well. When she was onstage presenting with Cameron Diaz, the Internet was buzzing about the fact that she had suffered a wardrobe malfunction … but it seems her double-sided tape did its job just fine.AngelinaJolie.Grade: A+

After Angelina Jolie flashed that leg on the red carpet, no one was even paying attention to what the "In the Land of Blood and Honey” director was actually wearing! The actress’ black Atelier Versace gown featured a thigh-slit, which the daring Jolie worked every chance she got throughout the night.Brad PittGrade: A-

Though he did look pretty spiffy in his Tom Ford tuxedo, the Actor in a Leading Role nomination admitted it’s "much easier” for men to get dressed for the Oscars than their female counterparts. It’s probably easier for them to do their hair, too. What did you think of his slicked-back ‘do?Viola DavisGrade: A

"The Help” best actress nominee left her wig at home (as she’s been doing quite a bit lately) and showed off her newly dyed short red locks along with a gorgeous green Vera Wang gown, which featured a jewel-encrusted neckline. Davis’ best accessory? Her super-toned arms!Sandra BullockGrade: B

Sandra Bullock’s white-and-black crepe Marchesa gown was OK at first glance, but looked much better from behind thanks to its beautifully draped back. Sean "Diddy” CombsGrade: A

Before he even hit the red carpet, the music mogul, who executive-produced the Best Documentary winner "Undefeated,” was spotted being primped by two assistants (one armed with a lint roller), outside his limo. All the extra effort was worth it: Diddy looked super-dapper in his tux.The DictatorGrade: F (For funny)

What else would you expect from Sacha Baron Cohen in character as "The Dictator”? The actor sported a uniform by John Galliano, socks from Kmart, and scored the biggest laughs of the night when he spilled the "ashes” of the late North Korean leader Kim Jong Il all over an unsuspecting Ryan Seacrest on the red carpet.