Demi Lovato joins X Factor USA judges on stage 20549
Demi Lovato joins X Factor USA judges on stage 20550
Demi Lovato joins X Factor USA judges on stage 20551
Demi Lovato joins X Factor USA judges on stage 20552
Demi Lovato joins X Factor USA judges on stage 20553
Demi Lovato joins X Factor USA judges on stage 20554
Demi Lovato joins X Factor USA judges on stage 20555
Demi Lovato joins X Factor USA judges on stage 20556
Demi Lovato joins X Factor USA judges on stage 20557
Demi Lovato joins X Factor USA judges on stage 20558
Demi Lovato joins X Factor USA judges on stage 20559
Demi Lovato joins X Factor USA judges on stage 20560