It appears that Kristin Cavallari and her husband have a new baby added to the family, but it's not the kind that some are assuming.

Kristin Cavallari Exposes Her Legs In Sultry Dress

On Saturday, Cavallari posted a photo on Instagram of a little puppy. The pooch sits on its legs and looks into the camera giving the typical adorable stare that dogs give. The reality star gave the impression that this is going to be big responsibility, but she'll likely have fun with her furry friend.

"Because 2 boys under the age of 3 weren't enough," Cavallari wrote in the caption.

Kristin Cavallari Gives 'Intimate Look' Into Her Life

A number of followers commented on the pic with genuine remarks such as, "It looks so fluffy!" and "he's cute:)"

The former star of The Hills has been a busy woman lately as a wife, mother and writer. She's been working on a lifestyle book called Balancing on Heels that will give some thorough details on her family life and several other details.

"It's basically an intimate look into my life," Cavallari told E! News. "So it's going to be a lot of fashion and beauty. Because I'm such a big health nut, there's going to be a lot of health and fitness. And then a lot of recipes because I love to cook and a lot of mommy and wife stuff. So really just everything in my life."

Cavallari is married to Jay Cutler. They have two sons, Camden, 2, and Jaxon, 10 months.