Demi Lovato joins X Factor USA judges on stage 32922
Demi Lovato joins X Factor USA judges on stage 32923
Demi Lovato joins X Factor USA judges on stage 32924
Demi Lovato joins X Factor USA judges on stage 32925
Demi Lovato joins X Factor USA judges on stage 32926
Demi Lovato joins X Factor USA judges on stage 32927
Demi Lovato joins X Factor USA judges on stage 32928
Demi Lovato joins X Factor USA judges on stage 32929
Demi Lovato joins X Factor USA judges on stage 32930
Demi Lovato joins X Factor USA judges on stage 32931
Demi Lovato joins X Factor USA judges on stage 32932