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13/02/2014 08:41 GMT | Updated 13/02/2014 08:59 GMT

Britney Spears Caught Lip-Syncing During 'Piece Of Me' Las Vegas Show (VIDEO)

Oops, it looks like Britney Spears has lip-synced again.

The '...Baby One More Time' singer had a headset malfunction while on stage during her 'Piece of Me' show in Las Vegas. But while her mic faltered her voice could still be heard belting out 'Stronger'. Hmm, strange that.

Lets hope Brit has no more 'slips' during her residency at Sin City's Planet Hollywood.

WATCH the video above to see the mistake.

Photo galleryLip Sync Fails See Gallery

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Photo galleryLip Sync Fails See Gallery