MTV's Teen Mom 2 star Kailyn Lowry shared pictures of her newborn son, whom she and husband Javi Marroquin welcomed on Saturday, Nov. 16.

The couple first shared a picture of baby Lincoln with InTouch Weekly on Sunday. In the image the infant is wearing a onesie and is wrapped in a faux fur blanket. He is held by his older brother Isaac, who is smiling at the camera. View the photo of Lowry's two sons here.

A friend of Lowry's told In Touch on Sunday that after a "very long pregnancy" she gave birth the night before.

"The whole family is so happy for her and Javi," added the friend.

The reality star later shared a family photo with Us Weekly. In the image published on Wednesday, baby Lincoln is fashionable in a baby blue knit beanie while wrapped in a white blanket.

The 21-year-old told the magazine that she is "exhausted" from giving birth but at the same time "excited and surprised" for her new child.

View Us Weekly's photos of baby Lincoln and his family here.

The reality star's first son Isaac is from a previous relationship with Jo Rivera. When she delivered Javi in January 2010, the moment was featured on season 2 of MTV's 16 and Pregnant. Lowry later wed Marroquin in 2012 ahead of his leave for the military with the Air Force. They held a ceremony, which was attended by loved ones, on Sept. 21 at the Adventure Aquarium in Camden, N.J.

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Kailyn Lowry