Demi Lovato joins X Factor USA judges on stage 10037
Demi Lovato joins X Factor USA judges on stage 10038
Demi Lovato joins X Factor USA judges on stage 10039
Demi Lovato joins X Factor USA judges on stage 10040
Demi Lovato joins X Factor USA judges on stage 10041
Demi Lovato joins X Factor USA judges on stage 10042
Demi Lovato joins X Factor USA judges on stage 10043
Demi Lovato joins X Factor USA judges on stage 10044
Demi Lovato joins X Factor USA judges on stage 10045
Demi Lovato joins X Factor USA judges on stage 10046
Demi Lovato joins X Factor USA judges on stage 10047
Demi Lovato joins X Factor USA judges on stage 10048