Gwen and Gavin take Kington and Zuma on a Skiing Adventure!

Gwen Stefani and Gavin Rossdale brought their sons, Zuma and Kingston, up to Mammoth in Northern California for a weekend of fun in the snow. The foursome threw on their cold-weather gear to hit the mountain yesterday, with Gwen and Kingston heading down the slopes on a tube. Kingston then laced up his boots and joined dad Gavin for a round of skiing. The Stefani-Rossdales got a taste of Winter after spending the last month at home in LA.