Blake Shelton and Miranda Lambert are seen onstage at the Girls' Night Out: Superstar Women of Country in Las Vegas on Monday, April 4, 2011. (AP Photo/Julie Jacobson)

Photo by: Julie Jacobson

Blake Shelton and Miranda Lambert are seen onstage at the Girls' Night Out: Superstar Women of Country in Las Vegas on Monday, April 4, 2011. (AP Photo/Julie Jacobson)