Demi Lovato and Joe Jonas.

Demetria Devonne "Demi" Lovato (born August 20, 1992) is an American actor and singer-songwriter. She is best known for her role as Mitchie Torres in the Disney Channel Original Movie Camp Rock and Sonny Monroe in Sonny With A Chance. Besides acting, she is also a solo music artist and released her debut album Don't Forget on September 23, 2008. The album debuted at #2 on the Billboard 200 selling over 89,000 copies in the first week. Lovato released her second album, Here We Go Again, on July 21, 2009. The album debuted at #1 on the Billboard 200 selling over 108,000 copies in the first week.