Demi Lovato joins X Factor USA judges on stage 19537
Demi Lovato joins X Factor USA judges on stage 19538
Demi Lovato joins X Factor USA judges on stage 19539
Demi Lovato joins X Factor USA judges on stage 19540
Demi Lovato joins X Factor USA judges on stage 19541
Demi Lovato joins X Factor USA judges on stage 19542
Demi Lovato joins X Factor USA judges on stage 19543
Demi Lovato joins X Factor USA judges on stage 19544
Demi Lovato joins X Factor USA judges on stage 19545
Demi Lovato joins X Factor USA judges on stage 19546
Demi Lovato joins X Factor USA judges on stage 19547
Demi Lovato joins X Factor USA judges on stage 19548