Demi Lovato joins X Factor USA judges on stage 28981
Demi Lovato joins X Factor USA judges on stage 28982
Demi Lovato joins X Factor USA judges on stage 28983
Demi Lovato joins X Factor USA judges on stage 28984
Demi Lovato joins X Factor USA judges on stage 28985
Demi Lovato joins X Factor USA judges on stage 28986
Demi Lovato joins X Factor USA judges on stage 28987
Demi Lovato joins X Factor USA judges on stage 28988
Demi Lovato joins X Factor USA judges on stage 28989
Demi Lovato joins X Factor USA judges on stage 28990
Demi Lovato joins X Factor USA judges on stage 28991
Demi Lovato joins X Factor USA judges on stage 28992