Megan Fox and Brian Austin Green welcomed their third child together, son Journey River Green, on August 4.
The couple are already parents to 3-year-old son Noah and 2-year-old son Bodhi, as well as 14-year-old Kassius, Green’s son from a previous relationship.
The couple are yet to comment but sources have confirmed the happy news to People.
The 30-year-old Teenage Mutant Ninja Turtles star stepped out at Cinema Con in April with a noticeable baby bump, despite the couple being separated at the time.
The couple, who married in 2010 and have been together for more than 10 years, split in 2015 with Megan filing for divorce.
The pair seem to have reconciled however, with sources telling People in July that they are living together and "seem very happy".
"Brian and Megan are living together in Malibu with their boys. They have been getting along and seem very happy. They are just waiting for the baby to arrive."