WASHINGTON: American country music artistes Blake Shelton and Miranda Lambert are officially divorced, ending their four-year marriage. According to TMZ.com, a judge has stamped the divorce papers that the 39-year-old Shelton had filed for two weeks ago, since there’s a shorter waiting period in Oklahoma than other states. The separation was smooth as the pair already had a prenup. A couple of days earlier, Shelton had posted an image showing his wedding ring on his finger, but as per reports he’s not wearing it anymore.