By peoplestaff225
Updated December 29, 2009 03:00 PM

A California girl at heart, Gwen Stefani gets bundled up for a brisk winter walk on Saturday in London with husband Gavin Rossdale and sons Zuma Nesta Rock, 16 months, and Kingston James McGregor (not pictured) who hopped and skipped ahead of his parents.

The family was enjoying a day out at Hampstead Heath, a popular city park, while they spend the month in Gavin’s native UK.

Zuma rides in a Mylo in Black Jack (£695).