Chelsea Houska is pregnant with baby number three, the Teen Mom 2 star confirmed tonight.
"She was keeping it quiet, and hadn't told many people yet," a source told RadarOnline.com. "A few crew members knew, but not everyone at MTV."
Houska and her husband Cole DeBoer welcomed their son, Watson Cole, in January 2017. The two tied the knot in October 2017 with her daughter Aubree by her side.
The MTV star, once a fan of posting pictures with figure-hugging clothes and work-out gear, had been hiding her stomach in social media posts, wearing a baggy shirt in the one picture she posted with DeBoer.
Houska joined her TM2 co-stars Jenelle Evans, Kailyn Lowry and Leah Messer as a mom of three with the news of her pregnancy.
The 26-year-old announced the news on her Instagram account, writing: "GUESS WHAT! A sweet baby girl will be joining the DeBoer clan in a few short months! We could not be more excited!"
The new baby will give Houska a happy family of five!
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