According to People, the 29-year-old is expecting her third child, and the father is Brian Austin Green, 42, from whom she filed for divorce in August 2015.
Fox recently stepped out at Monday’s CinemaCon in Las Vegas, where she showed off a baby bump while walking on the red carpet next to Will Arnett, her co-star in the Teenage Mutant Ninja Turtles: Out of the Shadows.
On Tuesday the New Girl star shared a photo collage of Shia LaBeouf, Jake Johnson and Will Arnett with the caption “#notthefather,” after questions about the unborn child’s father surfaced on social networks, considering Fox and Green’s recent separation.
“Of course Brian is the dad!” a source told People. “They never stopped loving each other and they will never stop being devoted parents to their boys.”
Brian and Fox, who have two sons, Bodhi Ransom, 2, and Noah Shannon, 3, met in 2004. They got engaged in 2006, then split in 2009 and reconciled later. In 2010, the couple tied the knot in Hawaii.