The singer, who releases her new single 'Dope' in the first week of November, would make her SNL debut on November 16 to promote her upcoming album ARTPOP, said the Hollywood Reporter.
Hutcherson, who reprises his role as Peeta in the Hunger Games follow-up, will make his hosting debut a day after his film hits theaters on November 22.
The popular faces that have hosted SNL this season include Tina Fey, Miley Cyrus, Edward Norton and Bruce Willis.