Joe Otterson TV Reporter Both Sydney Sweeney and Josh Brolin are set to host upcoming episodes of “Saturday Night Live.” Sweeney will make her hosting debut on the long-running NBC sketch comedy series on March 2. She will be joined by musical guest Kacey Musgraves, who will be appearing on the show for the third time. Sweeney recently starred in the Spider-verse film “Madame Web” and has the new film “Immaculate” opening in theaters on March 22.