On the heels of confirming that she's joining the show, the No Doubt singer recruited Gavin to serve as her guest mentor for the upcoming season. He'll be on hand to help her during the battle round, in which Gwen will have to cut her team members in half.
"We've never really collaborated on too much besides children," Gwen told Billboard. "It's just been hilarious. I get the R-rated version of what you guys get on TV, which is like so funny. It's really good."
Both the husband and wife are excited to be working with each other on the show, with Gavin saying, "The main thing, from my perspective, is just to make sure that Gwen is so good and excellent like all the other judges on the show."
Meanwhile, the fashion mogul said about her hubby, "He is super articulate, and he has a really good opinion. He is smart, and he's been doing a really good job. We both have, I think, a lot of experience in the sense that when you look back at all the shows and all the things we've done - and I mean, we all met like touring together and doing hundreds of shows - it's so fun to be in the position to meet [all of the contestants]."
The Voice will return Sept. 22, with the two new judges – Gwen and Pharrell – taking their seats at the judges' table with Adam Levine and Blake Shelton.
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Gallery | 'The Voice' Behind the Scenes!