Hollywood.TV is your source for all the latest celebrity news, gossip and videos of your favorite stars! <br />http://Facebook.com/HollywoodTV - Become a Fan! <br />http://Twitter.com/HollywoodTV - Follow Us! <br />Demi Lovato took the stage last night and gave a stunning performance of her new song "Heart Attack" at the outdoor stage for Jimmy Kimmel. Demi recently announced that she will back as a judge and mentor for the third season of The X Factor. Check out her performance.
