Gwen Stefani and Gavin Rossdale took Kingston and Zuma to her parents' house in LA yesterday. Kingston and Zuma were dressed in matching Harajuku Mini outfits for the special occasion while Gavin wore a denim shirt and jeans. Gwen's one of many stars that celebrated Mother's Day with family, and she shared a sweet message to her celebrity pals Gwyneth Paltrow, Alicia Keys, Nicole Richie, Victoria Beckham, and Kelly Wearstler on Twitter. Gwen wrote, "Happy Mother's Day muffins." Gwen had Gavin by her side for the festivities since he's currently in between stops on his tour with Bush. Gavin will hit the road again soon though, to play with his band in Canada tomorrow. Gwen's working on her own music with No Doubt and they'll release their latest album this September.