The 23-year-old entertainer is set to be musical guest while Julia will take on hosting duties.
In the hilarious promo, Nick learns that Julia was a cast member in 1982 which he says makes her “old enough to be…his biggest fan,” catching himself before he can say something else!
Cast member Aidy Bryant also jokes that she got married to Nick but it seems like she may have gotten some mixed signals.
Watch the entire promo below…
Julia Louis-Dreyfus and Nick Jonas SNL Promo