In the image, The Hills alum, 30, showcased her growing baby bump at 5 months along.
Earlier this month, the reality star and husband Spencer Pratt, 33, revealed their baby’s gender.
As it turns out, it’ll be blue booties for the parents-to-be.
“It was in my heart to have a boy,” Heidi admitted.
She added: “I thought Spencer really used to want a boy, and then a few months ago we had a conversation where he said, “Let’s just make sure it’s healthy. Boy or girl, I don’t care.”
That said, she’s also hoping to have a daughter in the future.
“I hope to have a little girl one day, but for my first child, I really wanted a son,” she shared. “I’m hoping to God that we don’t just have one, but if we do, I wanted a son. I thought it’d be a more natural bond for Spencer since he and his dad are so close.
And it sounds like their former costars are sending their best.
“Kristin [Cavallari] and Audrina [Patridge] both reached out and said congratulations,” she shared. “I’ve actually been in touch with both of them for a while now. And I obviously asked both of them for advice. Kristin sent me a whole list of baby things you need in the first few months, which has been really helpful.”
Last month, the couple announced their pregnancy news.