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Britney Spears' Major Onstage Wipe-Out Results In Sprained Ankle, Bruised Self Esteem

The nasty spill kept her down for the rest of the song.

Oops...I Did It Again is about to turn 15 years old, and it looks like Britney Spears is celebrating a little early with an oops of her own. The pop icon suffered a major wipe out during her Vegas performance last night, collapsing in the middle of "Crazy." She rolled her ankle and was down for the count until her loyal dancers came to her side and helped her up to finish the song.

She hobbled through the rest of the show, but took to Twitter to assure her fans that she's all good.