Say what you will about Britney Spears, at least she's a professional.
The singer was singing "Do Something," and a section of her blonde extensions became loose and dangled like a horsetail for a few seconds before falling to the stage.
Spears has been wearing clip-on extensions for her tour since she cut her hair into a short bob.
During an earlier show on her tour, she suffered a small wardrobe malfunction when her costume's zipper opened up totally exposing her back.
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