Demi Lovato joins X Factor USA judges on stage 09537
Demi Lovato joins X Factor USA judges on stage 09538
Demi Lovato joins X Factor USA judges on stage 09539
Demi Lovato joins X Factor USA judges on stage 09540
Demi Lovato joins X Factor USA judges on stage 09541
Demi Lovato joins X Factor USA judges on stage 09542
Demi Lovato joins X Factor USA judges on stage 09543
Demi Lovato joins X Factor USA judges on stage 09544
Demi Lovato joins X Factor USA judges on stage 09545
Demi Lovato joins X Factor USA judges on stage 09546
Demi Lovato joins X Factor USA judges on stage 09547
Demi Lovato joins X Factor USA judges on stage 09548