Meet Leah Calvert's newest addition to the family! The Teen Mom 2 star, who is already mother to adorable twins Aliannah and Aleeah, 3, gave birth to her third daughter, Addalynn, on Feb. 4 -- and fell in love all over again.
"We were amazed -- she was just so beautiful," the reality star (formerly Leah Messer) tells the new Us Weekly of seeing her tiny baby's face for the first time with husband Jeremy Calvert, 24. "She reached out and grabbed hold of Jeremy's little finger. It was very emotional."
The 20-year-old stay-at-home mom and her husband of nearly a year suffered a bit of a scare leading up to little Addalynn's birth when Messer's water broke unexpectedly, five weeks before her due date.
But it was Jeremy who was the most worked up, Messer tells Us: "He was a nervous wreck."PHOTOS: Teen Mom's most dramatic moments
Now that their family of five is complete, however, the young mom tells Us that her two older girls (their father is Messer's ex-husband, Corey Simms, 22) are starting to get the hang of having a younger sibling.
"They were trying to pick her up and carry her around," Messer said. "We had to put a stop to that! I think they get the concept now."
To learn more about how the proud parents are decorating the nursery, the origin of Addalynn's unique name, and which twin doesn't like helping with diaper duty, pick up this week's Us Weekly, on stands Friday!
This article originally appeared on Usmagazine.com: Leah Messer Debuts Baby Daughter Addalynn: Meet Teen Mom 2's Third Child
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