Gwen Stefani and Gavin Rossdale went shopping together yesterday in Beverly Hills, CA. They're getting reacquainted with their home base of LA following an extended holiday getaway to Gavin's native England. Gwen, Gavin, and their sons, Kingston and Zuma, spent much of December and early January in London, where they visited with Rossdale relatives, including their half-sister, Daisy Lowe. Now that they're in the US, Gwen's focusing on her work with No Doubt. Gwen flaunted her abs during a performance last week on Jimmy Kimmel Live. She also tweeted, "Song writing, listing to The Cure," hinting that more No Doubt — or Gwen solo material — is on the way.