Gwen Stefani Pictures at London Park With Kingston and Zuma Rossdale

Gwen Stefani was hand in hand with Zuma Rossdale yesterday on their way to a London park. Today, she stepped out with Kingston Rossdale, who was wearing a new pair of glasses, for a bite to eat. Gwen and the boys have been hanging out together in Gavin Rossdale's hometown while he's on the road with Bush. Gwen has been splitting her time in England between kid-friendly outings to the aquarium and the zoo with Kingston and Zuma and grown-up nights on the town. She met up with Kate Winslet at a cookbook launch last week and also recently partied in honor of Stella McCartney's 40th. Gwen celebrated her own birthday, her 42nd, on Oct. 3. The singer relaxed with her kids and accepted a major delivery of flowers on the big day. Gavin couldn't be there because of his concert dates back in the States, and the rocker pair will likely trade off touring duties next year, when No Doubt's reunion album finally debuts. The quartet has been recording songs for the CD since January, but just announced that the finished product won't be out until next year despite initial plans to release it in 2011.