“My angel,” she captioned the sweet pic, which clearly showed the outline of her little guy.
Montag also celebrated a pregnancy milestone, snapping a pic of herself at six months pregnant. She spent the day out on Sunday having a “ladies lunch” with a pal, who showed her how to do pregnancy squats to help prepare for giving birth.
The Hills alum then headed home where her husband, Spencer Pratt, had a very special surprise for her. Pratt, 33, has recently become obsessed with the hummingbirds outside of the couple’s home and created a hat with two hummingbird feeders hanging off of it so that the stunning birds would get very close to them.
Montag tried on the new gadget and documented the moment for her fans, showing off her growing baby bump in the process.
And as Montag gets ready to become a mom, Pratt recently revealed that he isn’t necessarily comfortable being in the delivery room with his wife of eight years.
"At the ultrasound, I pretty much fainted to the point of, where the lady was like, ‘I don’t know if you can come back in here. It’s dangerous. You’re going to hit your head,'" he recently admitted on the LadyGang podcast. "Heidi doesn’t even want me in the delivery room. I figured out, I’m going to sit in a wheelchair with an oxygen tank, and hire my own personal nurse to dose me, and maybe have some nitrous, but like, the whole, like, ‘Let me look in here’ action -- that’s way past where I’m at."