The singer's top pops up onstage, but her publicist says she was covered up underneath

By Stephen M. Silverman
Updated August 22, 2007 11:00 AM

Beyoncé Knowles 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.