The Hills alums will welcome a son this October, a source confirms to PEOPLE.
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Added the source, “Heidi has wanted this for so long and they’re finally on the same page. They’re so excited and she’s feeling good.”
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The couple of eight years — they celebrated their wedding anniversary in late April — shared a video with E! News shortly after their big news broke, showing the mom-to-be tearing up as she gazes at her baby boy’s ultrasound.
“I can’t believe that’s ours!” Montag said while the technician pointed out the baby’s tiny hand, with Pratt looking on close by as he recorded the moment. “Oh my gosh. That’s so exciting!”