Maci Bookout and her soon-to-be husband, Taylor McKinney, will be seen welcoming their second child together, the third child for Bookout, on tonight's new episode of "Teen Mom OG" season six. Although MTV cameras were not allowed to film in the delivery room, Bookout included her family footage on the show.

In a sneak peek at tonight's new episode shared by MTV last week, Bookout is seen holding her son, Maverick Reed, who is wrapped up tightly and wearing a hat. A short time later, Bookout's fiance, McKinney is seen allowing their daughter, 1-year-old Jayde Carter, to meet the baby. Also in the family footage, Bookout's oldest son, 7-year-old Bentley Edwards, is seen smiling with excitement.

As the sneak peek continues, Maci Bookout's friend arrives to the hospital for a visit and quickly sits down on a couch next to Bentley, who is holding his little brother. She then gives Bentley a big hug as she gets her first look at Bookout's third child.

Maci Bookout's third pregnancy was a total surprise

Following the birth of her daughter Jayde Carter, Bookout was believed to be on birth control as she and McKinney headed towards their wedding date. However, earlier this year, she shockingly announced that she was pregnant. On "Teen Mom OG," fans watched as Bookout wondered why she was gaining so much weight before agreeing to take a pregnancy test, which came out positive.

Maci Bookout is getting married soon

Earlier this year, while on the beach in Venice, Maci Bookout's longtime boyfriend, McKinney, the father of her two youngest children, popped the questions.

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As fans saw during the season premiere weeks ago, she was set up by McKinney, who led her to believe that she was on the beach for a photo shoot and interview with MTV News. Although she had been clear with her desires to get married, she was taken aback by the proposal and had no idea it would happen when it did.

For more of Maci Bookout and her family, tune in to the sixth season of "Teen Mom OG" airing on Monday nights at 9 p.m. on MTV.