Demi Lovato joins X Factor USA judges on stage 28525
Demi Lovato joins X Factor USA judges on stage 28526
Demi Lovato joins X Factor USA judges on stage 28527
Demi Lovato joins X Factor USA judges on stage 28528
Demi Lovato joins X Factor USA judges on stage 28529
Demi Lovato joins X Factor USA judges on stage 28530
Demi Lovato joins X Factor USA judges on stage 28531
Demi Lovato joins X Factor USA judges on stage 28532
Demi Lovato joins X Factor USA judges on stage 28533
Demi Lovato joins X Factor USA judges on stage 28534
Demi Lovato joins X Factor USA judges on stage 28535
Demi Lovato joins X Factor USA judges on stage 28536