Catelynn Lowell is in labor.

'Teen Mom' Catelynn Lowell 'Can't Wait' For Her Daughter's Arrival

Although the Teen Mom is not due until later this month, she took to Twitter on Thursday morning, where she told fans her baby girl was on her way. Lowell's fiancé, Tyler Baltierra, surfaced on social media as well, telling fans of his excitement.

"Well baby V is on her way!!" Lowell wrote, just before 11 a.m. on New Year's Day.

Tyler Baltierra Tells Fans He's 'Lucky' After Giving 'Teen Mom' Catelynn Lowell A New Engagement Ring

Lowell and Baliterra announced their exciting baby news in August on Instagram. Along with the first photo of the Teen Mom's baby bump, Baltierra told fans it was "official," and revealed she was four months into her pregnancy.

Around the same time as Lowell's tweet was posted, Baltierra shared an old photo of himself and Lowell with their first daughter Carly. In the caption, the reality star confirmed Lowell was ready to give birth.

"IT'S HAPPENING!" Baltierra said. "Here we go, doing this all over again. This is surreal, I'm freakin out a little lol but can't wait to meet my little angel! Thinking a lot about Carly right now. It's bringing me back. Even though I know this time I will actually be taking her home. I love my girls! #CantWait #Nervous #Excited #Scared #Happy."

For the last few months, Lowell and Baltierra have been filming scenes for the upcoming fifth season of Teen Mom. The season will debut on MTV sometime in 2015.

A video posted by Catelynn Lowell (@catelynnmtv) on Aug 8, 2014 at 11:38am PDT