Demi Lovato joins X Factor USA judges on stage 15772
Demi Lovato joins X Factor USA judges on stage 15306
Demi Lovato joins X Factor USA judges on stage 15773
Demi Lovato joins X Factor USA judges on stage 15307
Demi Lovato joins X Factor USA judges on stage 15774
Demi Lovato joins X Factor USA judges on stage 15308
Demi Lovato joins X Factor USA judges on stage 15775
Demi Lovato joins X Factor USA judges on stage 15309
Demi Lovato joins X Factor USA judges on stage 15776
Demi Lovato joins X Factor USA judges on stage 15310
Demi Lovato joins X Factor USA judges on stage 15311
Demi Lovato joins X Factor USA judges on stage 15777