Catelynn Lowell and Tyler Baltierra, who’ve starred on MTV’s 16 and Pregnant and Teen Mom, welcomed a daughter on Jan. 1.

Catelynn Lowell, Tyler Baltierra Welcome Daughter

Baltierra announced the birth of his daughter with Lowell on Twitter, writing, “OMG guys, my daughter is BEAUTIFUL! Can’t wait for you guys to see her! Born on 1/01/15 at 3:15 #StillCantBelieveIt #ShesPerfect.”

Baltierra, 21, captioned an Instagram picture (above), “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 #Blessed#NewYearBaby #MyGirls #AreMyWorld.”

Lowell, 22, and Baltierra named their daughter, who weighed in at 6 lbs 12 ounces and measured 19.5 inches,  Nova Reign, reported MTV.

The couple became reality TV stars in 2009 when they appeared on MTV’s 16 and Pregnant, charting Lowell’s pregnancy and the teens’ tough decision to give their child up for adoption. Lowell and Baltierra, who’ve remained together over the years and are engaged to be married, still have contact with their firstborn Carly.