Britney Spears was wow-ing fans at Las Vegas when the something unexpected took her by surprise.
According to Movie Pilot, while performing "3" in her 'Piece of me' concert, the zipper at the back of her hugging outfight suddenly split open.
The wardrobe malfunction however did not deter Britney Spears from delivering a good performance.
Instead of freaking out, the singer calmly continued on with her performance while backup dancers tried to mend her outfit.
They failed to do so in the end however; but thankfully the day was already saved by the 33-year-old singer's professionalism.
See what happened in the gallery below.