Gwen Stefani went grunge donning a sleeveless, tattered top as she took her sons Kingston and Zuma to the Underwood Family Farms in Thousand Oaks, CA, USA on July 6, 2013. Coordinating her look, the 43-year-old singer teamed her black blouse with a pair of skinny, distressed denim trousers. Photo by GSI/ABACAPRESS.COM06/07/2013 - Los Angeles - Photo