WATCH: Britney Spears' wardrobe malfunction
Britney carries on despite revealing more than she expected.
During Britney's Piece of Me show in Las Vegas she had an incident with a zip that was holding the back of her costume together.
The 33-year-old singer was in the middle of her 2009 hit '3' swinging from a metal structure when her costume began to undo. Gesturing to her dancers they valiantly tried to zip it back up, but failed.
Britney then made her way towards the front of the stage, still with her costume undone. Despite the best efforts of various dancers they had to leave her costume undone until she finished the song.
The wardrobe malfunction was captured by a member of the audience and you can watch it above.
Last month Britney announced she would be extending her Vegas residency for another two years.