Catelynn and her fiancé, fellow Teen Mom star Tyler Baltierra, are expecting their second child together and she is just blooming.
In a new photograph, Catelynn can be seen resting her hand on her pregnant tummy, which is covered in a red, stretchy maternity top.
Sharing the snap on Instagram, she posting a kissing emoji can two pink love hearts, adding: "Baby girl."
Last month, Catelynn and Tyler revealed that they are expecting another daughter in a cute Instagram video.
When they were just 16, Catelynn gave birth to their first child, a little girl called Carly, however they made the admirable decision to give her up for adoption. The couple felt they could not give Carly the life they wanted her to have, and MTV's 16 & Pregnant followed their adoption journey.
However, now aged 22, Catelynn revealed earlier this year that she and Tyler had decided to try for another baby.
The couple, who still see Carly and her adoptive parents, now work and own their own house, meaning they are able to support a baby.
Catelynn admitted: "We've both been yearning for this."
Meanwhile, it was recently confirmed that Catelynn and Tyler will be reuniting with their Teen Mom co-stars, Maci Bookout and Amber Portwood, for a new series.
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!
Will you be tuning in to see how Catelynn, Amber and Maci are getting on? Tell us below, as the best comment from across the website each week wins £50.