Demi Lovato joins X Factor USA judges on stage 26537
Demi Lovato joins X Factor USA judges on stage 26538
Demi Lovato joins X Factor USA judges on stage 26539
Demi Lovato joins X Factor USA judges on stage 26540
Demi Lovato joins X Factor USA judges on stage 26541
Demi Lovato joins X Factor USA judges on stage 26542
Demi Lovato joins X Factor USA judges on stage 26543
Demi Lovato joins X Factor USA judges on stage 26544
Demi Lovato joins X Factor USA judges on stage 26545
Demi Lovato joins X Factor USA judges on stage 26546
Demi Lovato joins X Factor USA judges on stage 26547
Demi Lovato joins X Factor USA judges on stage 26548