Kailyn Lowry's second son Lincoln Marshall Marroquinn. Credit: Kailyn Lowry/MTV

This may be her second time welcoming a baby boy into the world, but that doesn't mean Teen Mom 2 star Kailyn Lowry is any less excited. The 21-year-old recently married airman Javi Marroquinand on Nov. 16 the couple welcomed son Lincoln Marshall Marroquin.

Now, the proud mom has shared new photos of her bundle of joy exclusively with Us Weekly. Little Lincoln looks like he's going to fit in just fine with the Teen Mom crowd. He is, after all, making a duck face in his first photo -- a signature look for the reality show's cast. 

"I am exhausted, but we are so excited and surprised by our new baby boy," the MTV reality star told Us Weekly exclusively after the birth of her son.

Lowry gave birth to son Isaac Rivera in January 2010 on season 2 of 16 and Pregnant with now-ex-boyfriend Jo Rivera. She has since moved on to Marroquin, and the couple has appeared on Teen Mom 2 together.

Isaac seems thrilled to be a big brother, kissing his new sibling in an adorable family photo. 

When asked about Lincoln Marshall's name on Twitter, Lowry revealed that he was named after rapper Eminem (aka Marshall Mathers). Isaac was named after Isaac Hanson of Hanson Brothers fame. A theme emerges!