Beyonce Knowles appeared to be the victim of a fashion foul-up during a Toronto concert the other night – but her rep says 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 Beyonce 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.