Gwen Stefani: Beach Day with the Boys

Gwen Stefani is as chic as ever as she takes her two boys, Kingston and Zuma, to a birthday party on the beach on Sunday (May 20) in Marina Del Rey, Calif.

The 42-year-old No Doubt rocker kept an eye on her sons, ages 5 and 3, as they played in the water and built sand castles.

PHOTOS: Check out the latest pics of Gwen Stefani

Last week, Zuma was spotted out running some errands with dad Gavin Rossdale!

FYI: Gwen is wearing Balenciaga by Nicolas Ghesquière pants.

15+ pictures inside of Gwen Stefani and her sons Kingston and Zuma enjoying a day at the beach…