After eight years of marriage, The Hills’ most famous couple, Heidi Montag and Spencer Pratt, announced that they’re pregnant!

“Heidi has wanted to be a mom since the day I met her,” Spencer told Us Weekly. “She has planned for and thought about this.” The dad-to-be also revealed how his wife told him the news.

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Standing over their bed one morning, the 33-year-old recalled, “The look on her face, I can’t even describe it. She was literally glowing. I thought she was about to say she made muffins or banana bread. Heidi said, ‘I’m pregnant.’ I was like, ‘Whoa, that’s way more exciting than banana bread!’”

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Heidi, who's due on Oct. 19, added, “I started crying, and he embraced me… I have never been more excited. The reality is sinking in that we are going to have a child! I’ve read every pregnancy book, and now I realize I don’t know anything.”

The 30-year-old admitted she wanted a baby three years ago, but the timing wasn’t right. “Spencer was a little hesitant. Then one thing after another came up. We had work obligations, like Celebrity Big Brother in the U.K., which I did not want to be pregnant for.”

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“I’m actually really thankful we waited,” she continued. “I thought I was ready in my twenties, but with everything we had going on, it just wouldn’t have been a good situation for us.”

And it didn’t take long once they decided to try. Heidi got pregnant within the first month. “I felt nauseous and I wanted to know, so I took a pregnancy test. I was so shocked. Spencer wasn’t,” she shared. “He was so sure it would happen right away. He was like, ‘You’re going to get pregnant the first time we try.’”

The couple is following in the footsteps of their Hills co-stars, Lauren Conrad and Whitney Port, who are both expecting their first child in 2017. Audrina Patridge also gave birth to a daughter in June of last year. They’re growing up so fast!

Scroll through the gallery below to see how Heidi has transformed over the years.