Demi Lovato joins X Factor USA judges on stage 00445
Demi Lovato joins X Factor USA judges on stage 00446
Demi Lovato joins X Factor USA judges on stage 00447
Demi Lovato joins X Factor USA judges on stage 00448
Demi Lovato joins X Factor USA judges on stage 00449
Demi Lovato joins X Factor USA judges on stage 00450
Demi Lovato joins X Factor USA judges on stage 00451
Demi Lovato joins X Factor USA judges on stage 00452
Demi Lovato joins X Factor USA judges on stage 00453
Demi Lovato joins X Factor USA judges on stage 00454
Demi Lovato joins X Factor USA judges on stage 00455
Demi Lovato joins X Factor USA judges on stage 00456