Demi Lovato joins X Factor USA judges on stage 15027
Demi Lovato joins X Factor USA judges on stage 15523
Demi Lovato joins X Factor USA judges on stage 15028
Demi Lovato joins X Factor USA judges on stage 15524
Demi Lovato joins X Factor USA judges on stage 15029
Demi Lovato joins X Factor USA judges on stage 15525
Demi Lovato joins X Factor USA judges on stage 15030
Demi Lovato joins X Factor USA judges on stage 15526
Demi Lovato joins X Factor USA judges on stage 15031
Demi Lovato joins X Factor USA judges on stage 15527
Demi Lovato joins X Factor USA judges on stage 15032
Demi Lovato joins X Factor USA judges on stage 15528