Demi Lovato

Within a few short years, Demi Lovato went from a Disney starlet to a pop star with many hit singles to her credit, a judge position 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 Di...