Demi Lovato

Demetria Devonne "Demi" Lovato (born August 20, 1992) is an American singer-songwriter, musician, and actress.

Her earliest roles included a part on Barney & Friends, before she became better known for her starring roles in the Camp Rock movies, as Sonny Munroe in Sonny With a Chance, and as the star of the 2009 movie Princess Protection Program. She is also involved in philanthropic activities through charity work and various social and environmental causes

As a solo musical artist, Lovato released her debut album Don't Forget on September 23, 2008. The album debuted at #2 on the Billboard 200 selling 89,000 copies in the first week. It has since sold over 500,000 records in the United States.
Lovato released her second album, Here We Go Again, on July 21, 2009. The album debuted at #1 on the Billboard 200, selling 108,000 copies in the first week


.Taking from: Wikipedia.org