Gwen Stefani and her husband, Gavin Rossdale, squeezed in some holiday shopping when they hit up a Barnes & Noble in Studio City, CA, yesterday. Gwen and Gavin walked hand in hand while Gavin carried two large shopping bags full of items. Gwen wore a tweed coat smartly thrown over her shoulders and red leather pants, which perfectly matched her ever-present red lipstick. The couple didn't shop with their kids, Zuma and Kingston, though, since they were busy at school. Gwen and Gavin's outing continued their recent PDA trend after they kissed on stage while performing together at KROQ's Almost Acoustic Christmas earlier this month. They've been especially affectionate and open about their relationship lately, with Gwen also touching on the subject in her interview in Vogue's upcoming January issue.