Wearing nothing but a sparkly black bikini, Britney wasn't a bad girl, she was just bad.

Spears lip-synched, her new single, Gimme More, and bounced around the stage in sparkly underwear.

Spears looked drunk and unprepared. She walked through her dance moves with little enthusiasm. She appeared to have forgotten her lines near the end of the show.

Celebrities at the show were not impressed. Rapper 50 Cent looked at Spears with a confused look on his face; Diddy was expressionless.

The show's host even ripped her. Sarah Silverman didn't spare Spears in her opening monologue, saying, "She is 25 years old, and she has already accomplished everything she is going to accomplish in life."

Silverman even got in a dig at Brit's baby boys, Sean Preston and Jayden James, calling them "the cutest mistakes you've ever seen."