Demi Lovato joins X Factor USA judges on stage 12493
Demi Lovato joins X Factor USA judges on stage 12494
Demi Lovato joins X Factor USA judges on stage 12495
Demi Lovato joins X Factor USA judges on stage 12496
Demi Lovato joins X Factor USA judges on stage 12497
Demi Lovato joins X Factor USA judges on stage 12498
Demi Lovato joins X Factor USA judges on stage 12499
Demi Lovato joins X Factor USA judges on stage 12500