Saturday Night Live: Season 47, Episode 20

47 - 20: Selena Gomez / Post Malone

Selena Gomez makes her "SNL" hosting debut. The multihyphenate stars in season two of Hulu's hit series "Only Murders in the Building," premiering June 28.

Post Malone performs as musical guest for the first time. The Grammy-nominated artist's highly anticipated new album, "Twelve Carat Toothache," is set for  release on June 3.