Proud papa! Brian Austin Green recently joined Instagram, and, like millions of dads famous and otherwise before him, he has been using the platform to share adorable photos of his family with wife Megan Fox

Posting pictures under the username arent_you_that_guy, Green, 41, offered fans a peek into his life this week with personal shots of himself with Fox, 28, and his three sons. 

The Beverly Hills, 90210 alum shared a sweet image with his wife this past weekend at a Disney theme park. With her arms slung around Green, Fox hams it up for the camera, posing and making a face. 

The actor's oldest son Kassius is shown in a solo shot, wearing a green hooded sweatshirt and audio equipment, presumably on a film set with his father. "Child Labor :)," Green jokingly captioned the shot. Kassius, 12, is Green's son from a past relationship with his 90210 costar Vanessa Marcil

The Don't Blink actor also shared images of his two sons with Fox, whom he married in June 2010. In one photo, he poses with middle child, son Noah. The adorable tot, who just turned 2, looks like both of his parents and has long, light brown hair. 

Another recent picture shows Green cuddling his youngest son Bodhi, whom he and Fox welcomed this past February. The 7-month-old now has a full head of hair and wide, bright eyes, and is seen sucking on a pacifier. 

"Bodhi is finally starting to talk a little bit," Fox told Us Weekly exclusively of her little one last month. "He's an enormous child. He's in the 95 percentile for height and weight. So I've got a beast on my hands."