Demi Lovato joins X Factor USA judges on stage 18981
Demi Lovato joins X Factor USA judges on stage 18982
Demi Lovato joins X Factor USA judges on stage 18983
Demi Lovato joins X Factor USA judges on stage 18984
Demi Lovato joins X Factor USA judges on stage 18985
Demi Lovato joins X Factor USA judges on stage 18986
Demi Lovato joins X Factor USA judges on stage 18987
Demi Lovato joins X Factor USA judges on stage 18988
Demi Lovato joins X Factor USA judges on stage 18989
Demi Lovato joins X Factor USA judges on stage 18990
Demi Lovato joins X Factor USA judges on stage 18991
Demi Lovato joins X Factor USA judges on stage 18992