Kailyn Lowry of MTV reality show "16 and Pregnant" and "Teen Mom 2" fame gave birth to her second son Lincoln Marshall Marroquin, on Saturday, November 16, Us Weekly reports.

Lincoln in Lowry's second child and the first with her husband Javi Marroquin. He was born at 4:28 p.m. and weighs 8 pounds, 6 ounces, and Lowry recently took to Facebook to share a photo of her new bundle of joy. Lowry's three-year-old son, Isaac, is fathered by Lowry's ex-boyfriend, Jo Rivera. Now the 21-year-old reality star is happily married to Marroquin and "overjoyed to give Isaac a sibling," according to an Us Weekly insider.

"I am exhausted, but we are so excited and surprised by our new baby boy," Lowry told the gossip magazine.

Several weeks before giving birth, Lowry jokingly tweeted, "Taking the dogs for walk in hopes of the baby deciding to make his or her appearance into the world." She has been active on social media since multiple sources announced back in March that she and Marroquin were expecting their first child together.

On Nov. 13, the star tweeted, "Everything I know about babies is BOY. I have everything I would need. Even the PERFECT boy name picked out. I wouldn't mind another boy!" and earlier today, wrote, "So in love with this new little boy."

Lowry and Marronquin, a U.S. airman, dated for a year before getting married in September 2012.

via Wetpaint Entertainment, Facebook