Demi Lovato joins X Factor USA judges on stage 23988
Demi Lovato joins X Factor USA judges on stage 23989
Demi Lovato joins X Factor USA judges on stage 23990
Demi Lovato joins X Factor USA judges on stage 23991
Demi Lovato joins X Factor USA judges on stage 23992
Demi Lovato joins X Factor USA judges on stage 23993
Demi Lovato joins X Factor USA judges on stage 23994
Demi Lovato joins X Factor USA judges on stage 23995
Demi Lovato joins X Factor USA judges on stage 23996
Demi Lovato joins X Factor USA judges on stage 23997
Demi Lovato joins X Factor USA judges on stage 23998
Demi Lovato joins X Factor USA judges on stage 23999