No details further details have been released as yet about the baby's birth.
Gwen and Gavin, who've been married for 11 years, already have two sons, Kingston, 7, and Zuma 5. While we were hoping Gwen might have a little girl this time round, to play her mini-me, we're huge fans of her boys' punk rock style, so a third addition to the crew is music to our ears.
Gwen revealed she was expecting a little boy by sharing this picture on Instagram back in January.
So it could only a matter of days before she breaks news of her newest addition's name on the site.
Congratulations to the happy family!
Love Gwen? Check out her best looks below.