Demi Lovato joins X Factor USA judges on stage 08495
Demi Lovato joins X Factor USA judges on stage 08496
Demi Lovato joins X Factor USA judges on stage 08497
Demi Lovato joins X Factor USA judges on stage 08498
Demi Lovato joins X Factor USA judges on stage 08499
Demi Lovato joins X Factor USA judges on stage 08500
Demi Lovato joins X Factor USA judges on stage 08501
Demi Lovato joins X Factor USA judges on stage 08502