Demi Lovato

From her beginnings as a Disney starlet, Demi Lovato became a pop star with several hit singles to her credit, a judge on the U.S. version of Simon Cowell's popular talent search show The X Factor, and a spokesperson for mental health issues. Born in 1992 in Dallas, Texas, she was raised in a household that included her mother (a former Dallas Cowboys Cheerleader) and her two sisters, the youngest of whom launched her own acting career in 2008. Demi started out as a child actress, starring as a cast regular on Barney and Friends before finding her way onto the Disney Channel with a brief role in As the Bell Rings.