Kristin Cavallari
is one hot mama!

The former "Hills" starlet shared an Instagram snapshot on Wednesday, showing off her teeny tiny baby bump in a sassy selfie.

The blonde beauty and her NFL hubby Jay Cutler are expecting their second child. The couple already has a son, Camden, who celebrated his first birthday over the summer.  

Kristin's baby news doesn't come as quite a shock though -- in September the reality star told E! News that she was excited to expand her adorable family.

"We want to have a second sooner rather than later," Cavallari said. "We're working on it! Obviously, I want a little girl, but if I had another boy I would be so excited as well."

We can't wait to find out if the cute couple is having a little girl or another boy.

Click "Launch Gallery" above to see how Kristin's "Laguna Beach" co-stars have changed since the starring on the show, and check out the gallery below to see more expecting stars!


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