Welcome to the world, Baby Lincoln!

Kailyn Lowry's baby boy may only be a few days old, but he's already a picture perfect addition to the "Teen Mom 2" family.

21-year-old Kailyn and her airman husby, Javi Marroquin, welcomed baby Lincoln Marshall just three days ago, and Us Weekly secured the first pics of the brand new bundle of joy. The cherubic kiddo definitely inherited his dad's strong features, but also has a sick sense of style! Not just anybody can rock a dino hat, you know.

Kail's first son, Isaac, is clearly ready for big-brother duty, and in the snapshot below, he welcomes his baby bro into the world with a sweet smooch, while his parents can't help but grin at their growing family. And while Kailyn is pursuing a career in dentistry and Javi is hard at work in the Air Force, it looks like both of Kail's sons may have music in their future. During "Teen Mom 2: A Closer Look," Kail shared that Isaac's name was inspired by one of her favorite bands growing up, Hanson, and recently hinted to her Twitter followers Lincoln's middle name is a tribute to Eminem. Will the real Slim Baby please spit up?

+ Check out the pics, and leave your congrats in the comments!

The whole happy family after Lincoln's birth.

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Photos: Us Weekly