Celebrity Zuma Rossdale Learns How to Surf in Long Beach Meanwhile, Mom showed off her bikini-ready bod on Saturday By Alison Schwartz Published on June 30, 2013 11:45 AM Share Tweet Pin Email Photo: Splash News Online Look who’s already making waves this summer! Gwen Stefani and husband Gavin Rossdale’s youngest son, Zuma, 4½, beats the heat in Long Beach, Calif., where he honed his surfing skills on Saturday. That’s right – school may be out, but this little one (pictured here with his presumed instructor) is still learning. Meanwhile, 7-year-old brother Kingston also got in the spirit of the season with mom Stefani, who showed off her bikini-ready abs on land. Of course, it’s just another sandy outing for the frequent beachgoers.