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Catelynn Lowell And Tyler Baltierra Welcome A Baby Girl: See Pics

What a way to kick off 2015!

2015 sure looks very bright for Catelynn Lowell and Tyler Baltierra: Baby TyLnn has finally made her big debut!

The "Teen Mom" couple joyfully welcomed their daughter, Nova Reign -- weighing in at 6 pounds 12 ounces and measuring 19.5 inches -- on January 1:

Shortly after the initial announcement, Tyler shared a beautiful Instagram snapshot of the mother-daughter duo.

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"Momma Bear holding our little angel!" he wrote along with the image. "Can't tell you the feeling of witnessing this. Look at my beautiful bride to be! That woman is beyond strong, caring, and selfless. Couldn't have asked for a better little family #Blessed #NewYearBaby #MyGirls #AreMyWorld"

And the congrats began flowing in from some familiar MTV faces:

Before Nova's highly anticipated arrival, her beaming parents took to Twitter mid-labor to express their excitement:

And in several hours, she'd arrived -- and now her amazed folks are positively glowing.

Viewers were first introduced to the high school sweethearts back in 2009 on "16 and Pregnant" when the duo bravely chronicled their decision to create an adoption plan for their firstborn Carly. They continued to tell their unforgettable story on "Teen Mom" for three years, and we watched Cate and Ty grow up before our very eyes and mature into the young adults they are today.

Tyler Baltierra's Instagram

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Last spring, they announced that they were trying to have a child, and in August, they shared the exciting news that they were expecting. The Michigan natives, who made sure to document every bump growth and milestone along the way, later revealed that a little princess would enter their family fold.

Just a few days ago, Cate took to Twitter to gush about her daughter's impending birth. "Can't wait to hold my little angel in my arms for the first time. Teach her, love her, and guide her, I'm beyond excited to meet her!"

Offer your congrats to Catelynn, Tyler and Baby N in the comments below! And for a sweet trip down memory lane, relive their unforgettable engagement from "Teen Mom."

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