Beyoncé, performing in New Jersey Aug. 11
08/22/2007 AT 01:30 PM EDT
08/22/2007 AT 11:00 AM EDT
appeared to be the victim of a fashion foul-up during a Toronto concert the other night – but her rep tells PEOPLE that the pop star came prepared.
In a video apparently taken by a fan in the crowd, the singer, 25, had her top fly up while she was bouncing to the beat during an elaborate dance number.
But it wasn't a "flashing," says her publicist. "She's wearing a flesh-tone bra! Do you really think Beyoncé would go onstage like that?"
She adds that her mother, Tina Knowles, "is the quality-control officer" on the pop star's tour, ensuring that no wardrobe malfunctions occur onstage.
The exposure lasted all of a split second, but the clip made the celeb blog and YouTube rounds – just like last month, when Knowles suffered a different kind of stage mishap and fell down
a flight of stairs during an Orlando concert.
She quickly recovered and completed her number nearly without missing a beat – before saying to the crowd good-naturedly, "Don't put it on YouTube."
Both times, the crowd failed to listen.