Mama-to-be Heidi Montag is expecting a baby boy!

The Hills star recently spilled to Us Weekly that she and hubby Spencer Pratt are pregnant with a son. The news is doubly exciting for Heidi since that's what she wished for!

"Heidi wants four boys," her sister-in-law Stephanie Pratt said in 2009. "Four Spencer Pratts!"

MORE: Heidi Montag Reacts to Her 'Hills' Co-Stars' Pregnancy Announcements — "I Am Very Excited for Them"

The 30-year-old reality star recently revealed how she received the news of her baby's gender. "I ran into the room and said, 'It’s the doctor’s office!'  The doctor said, 'It’s a boy!' I started screaming," she recalled.

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Sunday fun day.. the 3 of us🤰🏼💛🤰🏼

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The couple announced they were expecting their first child last month, and are enthusiastically awaiting his Oct. 19 due date. Heidi said she can't wait to witness Spencer's relationship with their son.

"It was in my heart to have a boy," she continued. "I hope to have a little girl one day, but for my first child, I really wanted a son. 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."

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So sweet — we're excited to meet Heidi and Spencer's little man. The couple is following in the footsteps of their co-stars, Lauren Conrad and Whitney Port, who are both expecting their first child this year.

"I'm really excited for his personality and his little smile," Heidi added. "I’m excited to take him to Disneyland and to see if he's into dinosaurs, Mickey Mouse or ballerinas — it can be anything. Maybe he'll be the best dancer!"

Click through the gallery below to see The Hills stars then vs. now!