Jennifer Lopez performed during the live finale of reality show Q'Viva! the Chosen in Las Vegas over the weekend. For one particularly exciting number, she wore a shiny silver corset with paillettes layered around the waistline and some wispy lengths of sheer blue fabric attached, too — because that sort of thing is always handy when there's a wind machine around.

Hardly everyday attire even for J. Lo, but does this look rival Beyoncé in the glamorous-concert-attire stakes?