Chris Martin had the support of a special fan at the iHeartRadio Music Festival on Friday: his new girlfriend Jennifer Lawrence. Before the singer took center stage with Coldplay, Jennifer casually walked through the backstage area at the MGM Grand Garden Arena in Las Vegas, flashing a smile while turning heads. In anticipation of Chris's performance, the actress reportedly headed to a VIP lounge. Although Jennifer avoided the spotlight, she was dressed to impress in an Emilio Pucci ensemble, including a midriff-revealing top.