Credit: Instagram

Kids grow up so fast these days, y'all. It seems like just a few moons ago that Kailyn Lowry and Javi Marroquin were welcoming their son into the world, and now Lincoln Marshall Marroquin is a full month old! Can you believe it?

Credit: Facebook

Linc was born on November 16, which means he'll be a little over a month on Christmas Day — which we assume Kailyn and her family will be celebrating despite the fact that she's atheist. This kiddo has already changed a lot in the space of a few weeks, and his face is even more cherubic and sweet than usual in this brand-spankin' new picture.

It goes without saying that Kailyn and Javi make the cutest kids ever (keep up the good work, guys!), but Lincoln definitely looks like his dad. Sure, he has Kailyn's eyes — but this kid is the spitting image of his pop. Check out those lips!

We can't wait to meet Lincoln when Teen Mom 2 makes its triumphant return on January 21 in what's poised to be the most amazing season ever. Fans already caught a brief glimpse of Linc's face in the dramatic preview, so here's to hoping that Kailyn's labor and delivery will make the final cut.

Will you tune in to Teen Mom 2's fifth season? Hit the comments and tell us which of the ladies you're most excited to see!