Shelton recently opened up to ET about how special it was to bring Stefani and her entire family to Oklahoma for the opening of his new restaurant, Ole Red, last week.
"It's been a lot of fun for me to be the one to get to expose them to this -- out in the country," Shelton said. "They love it so much, her entire family. And when I say her family, I mean all of them. I'm talking about the kids, the mom, the dad, the brother. There's times when we've had holiday gatherings, and I'm talking about 30-plus family members from her side, from my side."