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It was just the second night of her Las Vegas residency show when — oops! — Britney Spears suffered a major wardrobe malfunction.

Sorry, gang, this mishap involved her back.

The entire back of her corset-type costume fell open during her Dec.30 performance, showing her bare back. She kept right on dancing and much more could have been revealed, but it all managed to stay together.

Two of the pop star's backup dancers, quickly tried to help zip and clip the glittery top back together while Brit kept right on singing her hit song Circus.

It all seems to have earned her the title of Last Celebrity Malfunction of 2013! Congrats, Brit!