Last year Blake shelton told Kelly Clarkson's boyfriend Brandon Blackstock to hurry up and propose to Kelly Clarkson and he'd even sing at the wedding. Well now he's going to marry her himself. Well he's going to marry both of them. Kelly told ET that not only was Blake still going to sing at the wedding but now he was going to officiate it as well. No date or other information has been released as of right now. You can learn more about Mr. Blackstock HERE.