Ariana Grande hosts "SNL" for the second time on Oct. 12. Following this year's release of her latest album, "Eternal Sunshine," the Grammy winner next stars in "Wicked," in theaters Nov. 22.
Stevie Nicks marks her second appearance as musical guest, following her first appearance in 1983. Nicks is a Grammy-winning singer-songwriter and two-time Rock & Roll Hall of Fame inductee.