Kristin Cavallari has someone to help her stay focused during her pregnancy exercises.

Kristin Cavallari Poses With Group Of Handsome Men As She Works On New Collection

The reality star, who's expected to give birth to her third child any day now, took to Instagram on Wednesday to post a photo of one of her sons as he sits on the floor while holding a knee brace. As he looks down, Cavallari took the picture and wrote in the caption that her little boy is her "perfect workout buddy."

 The perfect workout buddy when u are 9 months pregnant. #MovingVerySlowly #Does20MinutesCount ?!

A photo posted by Kristin Cavallari (@kristincavallari) on Nov 11, 2015 at 7:29am PST

Cavallari and her husband, Jay Cutler, are parents to Camden, 3, and Jaxon, 1. They are now expecting a little girl who's likely going to be born sometime this month.

Kristin Cavallari Says She Gets 'More Breakous' During Pregnancy

Meanwhile, the mom recently spoke with the new issue of American Baby where she dished on her anticipation for the new baby to come. Even though it's going to be a challenge, she knows there will be rewards as well.

"Having an infant is stressful, and I know I won't get a lot of sleep initially, but it will be worth it," the former Hills star said. "Jay and I want our kids to be close in age, so they can have a tight bond. And we'll get the diaper phase out of the way!"

Cavallari and Cutler have been married for two years now.

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Kristin Cavallari, Jay cutler