Demi Lovato joins X Factor USA judges on stage 29513
Demi Lovato joins X Factor USA judges on stage 29514
Demi Lovato joins X Factor USA judges on stage 29515
Demi Lovato joins X Factor USA judges on stage 29516
Demi Lovato joins X Factor USA judges on stage 29517
Demi Lovato joins X Factor USA judges on stage 29518
Demi Lovato joins X Factor USA judges on stage 29519
Demi Lovato joins X Factor USA judges on stage 29520
Demi Lovato joins X Factor USA judges on stage 29521
Demi Lovato joins X Factor USA judges on stage 29522
Demi Lovato joins X Factor USA judges on stage 29523
Demi Lovato joins X Factor USA judges on stage 29524