Adam Levine's biggest fan just might be Nicole Kidman. As the Maroon 5 frontman and "The Voice" judge performed his Oscar nominated song "Lost Stars" from "Begin Again," the "Queen of the Desert" and "The Hours" actress tapped her heel-clad foot and sang along. While most Academy Awards attendees quietly watched Levine's performance, Kidman knew every single word. She wasn't totally alone though: hubby and country crooner Keith Urban backed her up a bit.
