Father's Day this year also happened to be Shelton's 47th birthday.
"Everybody knows you are my dream come true," Stefani sweetly added during her speech.
Original coach CeeLo Green, Lewis Capaldi & Diplo with Lily Rose will take the stage to perform, as will another O.G. coach Adam Levine with Maroon 5.
"Hope u had a hoppy easter," Gwen Stefani captioned the hilarious post.
The musicians' playful banter has continued years after they worked alongside each other on the NBC singing competition.
The country star's first spring collection with the lifestyle brand Lands’ End debuted Monday (Feb. 27).
The country star shared that the show "changed my life in every way it possibly can, from a personal standpoint and obviously from a career standpoint."
Clarkson injects the "Honey Bee" Kellyoke cover with an appropriate country twang.
"Even though I'm a stepparent, I take that job very seriously. The kids see me as a very important person in their life," the country singer said.
"It's mine and Blake's last season... I can't even get the words out of my mouth 'cause it sucks."