Jessica Chastain will take the "SNL" stage as host for her first time. Chastain can currently be seen in Aaron Sorkin's drama "Molly's Game," opposite Idris Elba and Kevin Costner.
Alongside Chastain, Troye Sivan will appear as musical guest for the first time. "My My My!" – the lead single from Sivan's new album – "Blue Neighborhood," his 2015 multi-platinum debut album, topped the iTunes charts in 66 countries.