Gisele Bundchen shows off her vocal chops for the second time in an upcoming ad campaign for H&M. The Brazilian supermodel took to Instagram on Thursday to give fans a sneak peak at her dance cover of Blondie's "Heart of Glass." The short clip shows Mrs. Tom Brady strutting her stuff in a variety of sexy swimsuits and hanging out with French DJ Bob Sinclar, who produced the track for the ad. The full version will be available for download in May.