That's one way to lose the baby weight!

New mom Kate Hudson was spotted riding a bicycle around London Thursday. The 32-year-old Something Borrowed star rode around town running errands on a black bike. She was going incognito in a pair of black sunglasses and bundled up against the unseasonably chilly, dreary weather in a white hooded coat.

One thing she was missing? Her helmet!

Hudson gave birth to baby Bingham on July 9. She's already mom to Ryder, her 7-year-old son with ex-hubby Chris Robinson. Her fiance, Muse rocker Matt Bellamy, recently introduced their bundle of joy to the world when he tweeted a picture of mom and baby with the caption, "Family life!"

The pair are currently in 33-year-old Bellamy's native England visiting his family with newborn Bing. Before Bing's birth, a Hudson insider told Us Weekly that the family planned to spend time in the U.K. while Bellamy recorded a new album. The couple has been spotted on bikes before. They were snapped on a bike ride with her parents Goldie Hawn and Kurt Russell in L.A. last year.