Demi Lovato joins X Factor USA judges on stage 30513
Demi Lovato joins X Factor USA judges on stage 30514
Demi Lovato joins X Factor USA judges on stage 30515
Demi Lovato joins X Factor USA judges on stage 30516
Demi Lovato joins X Factor USA judges on stage 30517
Demi Lovato joins X Factor USA judges on stage 30518
Demi Lovato joins X Factor USA judges on stage 30519
Demi Lovato joins X Factor USA judges on stage 30520
Demi Lovato joins X Factor USA judges on stage 30521
Demi Lovato joins X Factor USA judges on stage 30522
Demi Lovato joins X Factor USA judges on stage 30523
Demi Lovato joins X Factor USA judges on stage 30524