Gwen Stefani accessorized with a pink L.A.M.B. laptop case as she arrived at a recording studio in LA on Thursday. She and the rest of No Doubt have been working hard on new music and twittering sneak peeks at what's coming, like a track titled "One More Summer." Gwen's downtime has been filled with family outings and trips to the park with Kingston and Zuma. Meanwhile, her rock-hard abs catapulted her into the sweet 16 of our 2010 Bikini Bracket. Gwen's currently trailing Diane Kruger in their smokin' hot matchup — don't forget to fill out your ballot for a chance to win an iPhone 4!