Demi Lovato joins X Factor USA judges on stage 17981
Demi Lovato joins X Factor USA judges on stage 17982
Demi Lovato joins X Factor USA judges on stage 17983
Demi Lovato joins X Factor USA judges on stage 17984
Demi Lovato joins X Factor USA judges on stage 17985
Demi Lovato joins X Factor USA judges on stage 17986
Demi Lovato joins X Factor USA judges on stage 17987
Demi Lovato joins X Factor USA judges on stage 17988
Demi Lovato joins X Factor USA judges on stage 17989
Demi Lovato joins X Factor USA judges on stage 17990
Demi Lovato joins X Factor USA judges on stage 17991
Demi Lovato joins X Factor USA judges on stage 17992