Demi Lovato joins X Factor USA judges on stage 21525
Demi Lovato joins X Factor USA judges on stage 21526
Demi Lovato joins X Factor USA judges on stage 21527
Demi Lovato joins X Factor USA judges on stage 21528
Demi Lovato joins X Factor USA judges on stage 21529
Demi Lovato joins X Factor USA judges on stage 21530
Demi Lovato joins X Factor USA judges on stage 21531
Demi Lovato joins X Factor USA judges on stage 21532
Demi Lovato joins X Factor USA judges on stage 21533
Demi Lovato joins X Factor USA judges on stage 21534
Demi Lovato joins X Factor USA judges on stage 21535
Demi Lovato joins X Factor USA judges on stage 21536