Kate Hudson and Matt Bellamy welcomed a son last night.
A representative for the Hollywood actress confirmed to People that Hudson gave birth to a "healthy baby boy" yesterday in Los Angeles.
Hudson is already mother to 7-year-old Ryder, from her first marriage to Black Crowes frontman Chris Robinson, but the new arrival is Bellamy's first child.
The Muse frontman and Bride Wars star announced the unexpected pregnancy in January, having been in a relationship since early 2010.
The couple confirmed in April that they were now engaged, following several weeks of speculation.
Hudson and Bellamy have yet to announce a name for their newborn son.