Demi Lovato joins X Factor USA judges on stage 27481
Demi Lovato joins X Factor USA judges on stage 27482
Demi Lovato joins X Factor USA judges on stage 27483
Demi Lovato joins X Factor USA judges on stage 27484
Demi Lovato joins X Factor USA judges on stage 27485
Demi Lovato joins X Factor USA judges on stage 27486
Demi Lovato joins X Factor USA judges on stage 27487
Demi Lovato joins X Factor USA judges on stage 27488
Demi Lovato joins X Factor USA judges on stage 27489
Demi Lovato joins X Factor USA judges on stage 27490
Demi Lovato joins X Factor USA judges on stage 27491
Demi Lovato joins X Factor USA judges on stage 27492