Demi Lovato joins X Factor USA judges on stage 26493
Demi Lovato joins X Factor USA judges on stage 26494
Demi Lovato joins X Factor USA judges on stage 26495
Demi Lovato joins X Factor USA judges on stage 26496
Demi Lovato joins X Factor USA judges on stage 26497
Demi Lovato joins X Factor USA judges on stage 26498
Demi Lovato joins X Factor USA judges on stage 26499
Demi Lovato joins X Factor USA judges on stage 26500