Bringing an end to the weekend with a family outing, Gwen Stefani and Gavin Rossdale were busy with the kiddies in Los Angeles, California on Sunday (February 28). Joined by a helping hand, the No Doubt frontwoman and her Bush rocker hubby escorted Zuma and Kingston on a trip to the Los Angeles Zoo. Clad in a sheer black top over a bright blue brassiere, Miss Stefani smiled as she pushed young Zuma in his stroller before letting her little one join his big brother in a multi-child stroller