In the photos, Adam is spotted pushing their four-year-old daughter Arlo in a stroller as a pregnant Leighton walked beside them.
We are DYING!
Leighton and Adam met on set while filming the movie Oranges in 2011. The pair got secretly married in 2014.
When she was pregnant with Arlo, she managed to keep it in the dark and away from the media.
Last year, the actress told Us Weekly that motherhood has changed her perspective on life.
"People started telling me before [I had] a kid, ‘You’re going to really love them. Then you’re like, ‘Yeah, obviously, I’ll love them.’ And then you do [have them] and you’re like, ‘Oh. OK. I don’t love anyone else. I just love them. And I don’t even love myself as much as I love them! Not even close.’ I don’t know, would I kill somebody or die for them? Sure. I would," she said.
The couple are extremely private, with Adam telling GQ late last year that they have a good balance.
"We're homebodies. We don't go to a lot of things that perhaps we could, and don't seek out promotion in that way," he said.
"I'm not s**tting on anyone who monetises that aspect of their life because I get it. But we've found this great balance so far that really works for us. We're also not very active on social media."