Introducing Axl Jack Duhamel!

Proud papa Josh Duhamel and wife Fergie just posted the first photo of their newborn son on Facebook -- sharing what he looked like the day of his birth.

"Axl Jack Duhamel Day 1," Josh posted along with the pic -- adding, "Life is good. #paparazziyoucanleaveourhousenow."

The adorable baby boy was born via C-section on August 29, weighing in at 7lbs, 10oz. He's the couple's first child.

Isn't he a little cutie? It's clear he's got his mama's lips!

See more cute celeb kid candids in the gallery above. We can't wait to see more of Axl in the future!