Demi Lovato joins X Factor USA judges on stage 18537
Demi Lovato joins X Factor USA judges on stage 18538
Demi Lovato joins X Factor USA judges on stage 18539
Demi Lovato joins X Factor USA judges on stage 18540
Demi Lovato joins X Factor USA judges on stage 18541
Demi Lovato joins X Factor USA judges on stage 18542
Demi Lovato joins X Factor USA judges on stage 18543
Demi Lovato joins X Factor USA judges on stage 18544
Demi Lovato joins X Factor USA judges on stage 18545
Demi Lovato joins X Factor USA judges on stage 18546
Demi Lovato joins X Factor USA judges on stage 18547
Demi Lovato joins X Factor USA judges on stage 18548