Gavin Rossdale and Gwen Stefani take their boys Kingston and Zuma to the park in Sherman Oaks, California on March 24, 2013. Credit: Buba/Splash News

So that's what rockstar couples do in their down time! Gwen Stefani and husband Gavin Rossdale looked relaxed and happy as they strolled through a park in L.A.'s Sherman Oaks neighborhood on Sunday, March 24 while their two sons took turns swinging at a baseball.

The No Doubt singer, 43, and the Bush frontman, 47, both wore loose-fitting white T-shirts and sneakers for the family outing, with Stefani accessorizing her look with a baseball cap, giant aviator glasses and her signature bright red lipstick.

PHOTOS: Gwen Stefani's life as a mom

Zuma, 4, and Kingston, 6, opted for more colorful gear. The couple's older son went green with a Boston Celtics jersey, while little towheaded Zuma proudly wore an L.A. Lakers jersey.

The two boys took turns trying to hit a baseball around, and Stefani and Rossdale (who held hands at times) watched happily from behind the batting cage.

Stefani spoke to New York magazine last August, and admitted that becoming a mother has made her reassess a lot of things in her very busy life.

"I don't think [parenthood has] mellowed us out, but priorities have to change," she said at the time. "Before, it was unspoken that the band was the No.1 thing; there was not a girlfriend or someone else that could be before the band. It wasn't even something we discussed, it just was what it was."

"But we're at a stage where we don't have to be like that anymore; we can kind of do this when we want to do it," she continued, referring to her band members, who all have children of their own. "We were just burned out; we had toured so, so much, and it takes so much of yourself. I got married and decided I wanted to do a dance record, and I didn't ever expect for it to be what it was or for the No Doubt thing to be such a long break, but it was one of those things where you just had to sort of follow your inspiration."