Demi Lovato joins X Factor USA judges on stage 20513
Demi Lovato joins X Factor USA judges on stage 20514
Demi Lovato joins X Factor USA judges on stage 20515
Demi Lovato joins X Factor USA judges on stage 20516
Demi Lovato joins X Factor USA judges on stage 20517
Demi Lovato joins X Factor USA judges on stage 20518
Demi Lovato joins X Factor USA judges on stage 20519
Demi Lovato joins X Factor USA judges on stage 20520
Demi Lovato joins X Factor USA judges on stage 20521
Demi Lovato joins X Factor USA judges on stage 20522
Demi Lovato joins X Factor USA judges on stage 20523
Demi Lovato joins X Factor USA judges on stage 20524