We spotted Kate Hudson and her fiance, Muse frontman Matt Bellamy, walking in London today. Bellamy covered his head with a plastic bag, looking out through a single eye hole. What a jokester! Kate wore a pair of Vibram FiveFingers sport shoes.

Kate gave birth to her second son, Bingham, in July. The couple got engaged last April. It will be the second marriage for Kate. She was previously married to The Black Crowes rocker Chris Robinson, with whom she has a 7-year-old son named Ryder.

Slideshow: The Sexy Kate Hudson