Blake Shelton to Officiate Kelly Clarkson-Brandon Blackstock Wedding!

Kelly Clarkson revealed at the 2013 ACM Awards Sunday night that her wedding to Brandon Blackstock will feature a well-known officiant: Blake Shelton!

The original American Idol, 30, told Entertainment Tonight's Nancy O'Dell that The Voice mentor will not just attend the nuptials, but conduct the wedding itself.

Kelly, Blake and Brandon go back a long way. Shelton says he had a huge hand in making sure Clarkson's fiance popped the question in a timely manner.

"I told Brandon, man, you need to grow up and figure out that you need to marry this girl," he told the site at the time. "I am going on the record here."

"I will do the music at the wedding or whatever, I'll be that guy. I will play for four hours if I have to, cause you need to get your head out of your ass."

Looks like Blackstock took him up on the offer!

Clarkson excitedly announced her engagement to Blackstock (who is Reba McEntire's stepson) earlier that month via Twitter, with a simple tweet and a photo.

She and performed last night while Shelton co-hosted and his wife won big. Check out Kelly Clarkson's performance and Miranda Lambert's speech!