“Time to introduce the world to our baby girl soon, Ensley Jolie Eason,” Evans wrote. “She will be arriving Jan. 28th. We couldn’t be any happier! @uncledave01.”
In the photo, Evans is standing in a lake wearing a floral dress and a flower crown and looking lovingly at her beau.
Eason also posted a photo from the shoot – this one of him kissing Evans in a row boat and cradling her bump.
“IT’S A GIRL YALL!! I’m so happy im bout ta cry!! I love you so much @j_evans1219 and I can’t wait to meet our baby girl Ensley Jolie Eason!!” he wrote.
In July, Evans first addressed her pregnancy rumors in a since-deleted Instagram post. The news first broke when the mother of two was in a car accident and was listed as being 10 weeks pregnant in the official police report.
"I don't understand what is 'disappointing' or 'sad,'" she wrote. "Why not ask if I’m ok from the car accident?! Why not be concerned about my health?! I want privacy. All of you disgust me. It’s all about gossip these days… Funny someone else comes out with news they are pregnant and the world is overjoyed."
Eason is already dad to 9-year-old daughter, Maryssa, from a previous relationship. Evans has two sons – Jace, 7, with her ex-boyfriend, Andrew Lewis, and Kaiser, 2, with her ex-fiancé, Nathan Griffith.
The couple has been dating since last fall, shortly after Evans and Griffith ended their engagement in a dramatic fashion. The exes are still at odds, with Griffith accusing Evans of being a drug addict during the most recent Teen Mom 2 reunion.