The reality TV star, known for her teenage antics on MTV's Laguna Beach (and later for her starring role on The Hills), is expecting her second child with NFL star hubby Jay Cutler, 30. E! Online was the first to report the news.
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Kristin and Jay also have a one-year-old son, Camden. And she's been open about wanting her kids to be as close as possible in age.
"We want to have a second sooner rather than later," Kristin told E! News back in September. "We're working on it!"
"We know we want another one close in age to Camden, and we're at the point where we're both ready," she explained. "Before Camden was born, I thought I'd be pregnant again by the time he was six months, but I definitely wasn't ready. Now, I'm finally ready."
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Kristin and Jay were married last summer in Nashville, around the time of Camden's first birthday. They then went on a honeymoon in Italy. Nice!
Kristin and Camden are photo'd above at the famous Mr. Bones pumpkin patch, in West Hollywood, California.
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