Sienna Miller and Tom Sturridge are first-time parents.
The model gave birth to a baby over the weekend in London, Us Weekly confirms, though details such as gender and size are being kept confidential at the moment.
Miller and Sturridge have been dating for over a year and are engaged to be married.
Both have remained mostly quiet about impending parenthood, but Sienna did, in an April interview with Vogue UK reveal that the pregnancy was "progressing nicely" and the prospect of becoming a mother was "very exciting."
We wish the brand new family all the very best!