Blake Shelton, Kelly Clarkson( inset) Blake Shelton, Kelly Clarkson( inset)

Blake Shelton will pull double duty at Kelly Clarkson's wedding to Brandon Blackstock. Not only will The Voice coach perform, but he will officiate the ceremony as well.

"He's not only singing; he's marrying us," Clarkson told Entertainment Tonight at Sunday's 48th Academy of Country Music Awards. "He totally is. He's done it before with people."

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