Demi Lovato joins X Factor USA judges on stage 33421
Demi Lovato joins X Factor USA judges on stage 33422
Demi Lovato joins X Factor USA judges on stage 33423
Demi Lovato joins X Factor USA judges on stage 33424
Demi Lovato joins X Factor USA judges on stage 33425
Demi Lovato joins X Factor USA judges on stage 33426
Demi Lovato joins X Factor USA judges on stage 33427
Demi Lovato joins X Factor USA judges on stage 33428
Demi Lovato joins X Factor USA judges on stage 33429
Demi Lovato joins X Factor USA judges on stage 33430
Demi Lovato joins X Factor USA judges on stage 33431
Demi Lovato joins X Factor USA judges on stage 33432