The Disney Diva has totally blossomed into the talented woman she was destined to be. Last Week in Chicago, singer/actress Demi Lovato wowed fans at The B96 Pepsi Summer Smash with her unexpected cover of Rihanna‘s hit single “Stay“. It even seemed as if Lovato lowered her vocal ability to deliver a Rihannaesque performance. Overall Demi has always had an amazing voice, and even without her having to do much, her tone is enough to qualify her as a stunning vocalist. Get into the clip below and tell us what you think of The X-Factor judge’s performance.