Singer Billie Eilish and actor Paul Rudd will host the last two “Saturday Night Live” episodes of 2021 on December 11 and December 18 respectively.

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Eilish will host her very first “SNL” and will appear for the second time as a musical guest on the late-night sketch show, followed by People’s “Sexiest Man Alive” winner Rudd, who will host “SNL” for the fifth time.

Rudd will be joined by Charli XCX, who will also be performing as a musical guest on the show for the second time, reports variety.com.

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Eilish will be promoting her sophomore album, “Happier Than Ever,” which launched at #1 on the Billboard 200 chart and was well-received by critics and listeners alike.

Eilish performed songs from the album for a filmed tribute concert at the Hollywood Bowl. Rudd, on the other hand, will be starring in “Ghostbusters: Afterlife,” that is ready to hit theatres, and Apple TV Plus’ “The Shrink Next Door” opposite Will Ferrell, Kathryn Hahn and Casey Wilson.

This Saturday’s “SNL” host is Simu Liu, Canadian star of “Kim’s Convenience” and one of the Marvel Cinematic Universe’s latest superheroes to grace the big screen, Shang-Chi.

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His musical guest is rapper Saweetie, known best for her songs “My Type,” “Tap In” and “Best Friend” with fellow rapper Doja Cat.

“SNL” is produced in association with Broadway Video and is executive produced by creator Lorne Michaels. The entertainment program has won eight Emmy Awards, including Outstanding Variety Sketch Series in 2021.