Tyler Baltierra, boyfriend of 'Teen Mom' star Catelynn Lowell, broke big news to the couple's fans over social media when he tweeted, "my daughter is BEAUTIFUL! Can't wait for you guys to see her! Born on 1/01/15 at 3:15."

As if a beautiful baby girl isn't wonderful enough news, the girl was born on New Year's Day - the perfect welcome to 2015. However, the engaged couple was not always ready for a child. In 2009, they had to put their first daughter, Carly, up for adoption because they were not ready for a family.

Five years later, when Catelynn and Tyler went public about being ready for a child, she posted, "I am an adult and I can tell when I'm ready. Idc what ANYONE says I'm gonna do me! We ARE READY for a baby. #HatersGonaHate."

Stepping into the present, Tyler wrote on Instagram in reference to Catelynn, "She's the best thing that has ever happened to me," adding, "She's everything I want that I never knew I needed. She's the most selfless, kind hearted woman that I'm lucky enough to call mine."

The couple is evidently very in love, as this Christmas, Tyler gave Catelynn a brand new engagement ring. More recently, however, Tyler and Catelynn's Instagram posts are all about the most recent member of their family.

When his daughter was born, Tyler posted a picture of his future wife holding his daughter with the heart-melting caption: "Momma Bear holding our little angel! 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."