Rihanna will "Talk That Talk" with "The X Factor" contestants on Thursday night.
As first reported in September, the singer will join Simon Cowell's show as a guest judge, a role she played on the reality competition's UK incarnation last year.
Rihanna will join judge L.A. Reid in cutting down the boys' category, with the episode set at his home.
Thursday night's two-hour episode was originally set to air Wednesday, but was pushed back by Fox following an MLB playoffs rain delay. According to EW.com, the previously scheduled Thursday episode will air Sunday.