As expected, Gwen Stefani spent her weekend at home in LA instead of making the cross-country trek to oversee the runway presentation for her L.A.M.B. line. The Spring 2012 L.A.M.B. show took place yesterday in NYC, with Gwen and her team creating their latest collection of bold prints. Gwen, meanwhile, spent her Saturday at a children's party with her sons Zuma and Kingston. There was more family fun in store yesterday, when she headed out in a black Banana Republic top and big hair to take her boys to a karate class. Her husband, Gavin Rossdale, was on the road. He and his band Bush are in the middle of a tour, and played a show in St. Louis.