Catelynn Lowell gave birth on New Year's Day.

'Teen Mom' Star Catelynn Lowell: 'Baby V Is On Her Way'

Hours after announcing his fiancée was in labor on Thursday, Tyler Baltierra surfaced on Twitter, where he revealed Lowell had given birth to their second daughter, Nova Reign.

"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 wrote on Thursday evening.

'Teen Mom' Stars Catelynn Lowell & Tyler Baltierra Dish On Their New Tell-All Book

A short while after announcing his daughter's birth, Baltierra shared the first photo of Nova Reign.

"Momma Bear holding our little angel!" he captioned the picture. "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."

Earlier this year, Lowell expressed her excitement in having her two daughters meet. Although she and Baltierra chose adoption for their first daughter, Carly, the couple has kept in touch with the child's adoptive parents and hopes to see the girls grow up together.

“I’ll never hide anything from my kids. Our child [will grow up] with Carly around her,” Lowell told In Touch Weekly. “My hope is that they’ll have a great relationship one day. They’re sisters.”

 My baby girl listen careful and you can hear her heart beat!!

A video posted by Catelynn Lowell (@catelynnmtv) on Aug 8, 2014 at 6:04pm PDT