Demi Lovato joins X Factor USA judges on stage 09549
Demi Lovato joins X Factor USA judges on stage 09550
Demi Lovato joins X Factor USA judges on stage 09551
Demi Lovato joins X Factor USA judges on stage 09552
Demi Lovato joins X Factor USA judges on stage 09553
Demi Lovato joins X Factor USA judges on stage 09554
Demi Lovato joins X Factor USA judges on stage 09555
Demi Lovato joins X Factor USA judges on stage 09556
Demi Lovato joins X Factor USA judges on stage 09557
Demi Lovato joins X Factor USA judges on stage 09558
Demi Lovato joins X Factor USA judges on stage 09559
Demi Lovato joins X Factor USA judges on stage 09560