It appears that Katie wasn't sure at first if she was pregnant or not from the looks of one pregnancy test. She shared a photo of her pregnancy test on Instagram with the caption, "Is this one or two lines? I'm confused."
A few hours later, Katie seemed more sure that she was expecting, sharing another photo on Instagram of not one but two pregnancy tests, each indicating that she is with child. "Oh shizzzzzzz, edit, yay!!!!!" Katie captioned the photo.
This will be the fourth child for Katie. She is already mom to son, James Rocco, and twin daughters, Kathryn and Renee, from her marriage with James Orsini (the couple later divorced).
Katie hasn't yet revealed who the father of her child is, but she has shared several lovely photos of herself with a man named Jacob, with whom she appears to have been in a relationship with since the summer.
When RHOP fans first met Katie in Season 1, she was with boyfriend Andrew Martin, with whom she eventually got engaged to. But by the time that season's reunion rolled around, Katie revealed that she and Andrew had called it quits.
Look back on Katie's time on RHOP, below.