Chelsea Houska stars on Teen Mom 2.
But she is now a mother of THREE.
The veteran MTV personality broke this exciting piece of news just a day after posting a picture of her 38-week old baby bump.
This means that Chelsea and husband Cole De Boer welcomed their latest bundle of joy several days earlier than her due date.
Everyone is happy and healthy, however, with long-time Teen Mom viewers undoubtedly anxious to meet the couple's new addition.
Check out her first photo and learn her name down below...
1. Oh, Happy Day!
Houska alerted the world to her third pregnancy in March 2018, saying on Instagram: "….GUESS WHAT! A sweet baby girl will be joining the DeBoer clan in a few short months! We could not be more excited."
2. And New Baby Makes Five
Chelsea and Cole welcomed a son named Watson in January of 2017 -- and Houska also has an eight-year-old daughter named Aubree from a previous relationship with law-breaking ex-boyfriend Adam Lind.
3. What a Name!
"Happy birthday to YOU, sweet baby Layne," Chelsea wrote on Instagram as an introduction to her newest bundle of joy.
4. Short and Sweet
Pretty short and simple and not informative, no. We don't know her measurements yet, for example.
5. But Fans are Pretty Psyched!
Here's a sampling of their responses to the above photo on Instagram. It's nearly unanimous: Congrats all around!
6. A Photogenic Lady
And once you see the first official photo of little Layne, we think you'll have no trouble understanding why fans are so smitten with the newest addition to the Teen Mom 2 family ...