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