Demi Lovato joins X Factor USA judges on stage 15537
Demi Lovato joins X Factor USA judges on stage 15538
Demi Lovato joins X Factor USA judges on stage 15539
Demi Lovato joins X Factor USA judges on stage 15540
Demi Lovato joins X Factor USA judges on stage 15541
Demi Lovato joins X Factor USA judges on stage 15542
Demi Lovato joins X Factor USA judges on stage 15543
Demi Lovato joins X Factor USA judges on stage 15544
Demi Lovato joins X Factor USA judges on stage 15545
Demi Lovato joins X Factor USA judges on stage 15546
Demi Lovato joins X Factor USA judges on stage 15547
Demi Lovato joins X Factor USA judges on stage 15548