Katy Perry suffers wardrobe malfunction as her tiny bra bursts open mid performance

Katy Perry suffered an X- rated wardrobe malfunction when her bra burst opened as she took to the stage in Las Vegas amid her Lifetimes Tour. The songstress, 40, was energetically performing 2010 hit Part Of Me and while running across the stage in a tiny two piece, before her metallic top opened at the back.