By Jonathan Borge
Updated: Aug 08, 2016 @ 4:48 pm
Noel Vasquez/Getty

There's nothing quite as strong as a mother's love, and Kristin Cavallari certainly isn't shy about showing how she feels about her children.

On Monday, the 29-year-old mom of three proudly took to Instagram to wish her and husband Jay Cutler's oldest son, Camden Jack Cutler, a joyous birthday. "Happy 4th birthday to the sweetest soul I know, my little Cammers. I CANNOT believe it's been 4 years!" she wrote as the caption to a darling mother-son image. Sure, the caption is memorable, but it's the shot itself that's nothing but sweet.

In it, the stylish mom plants a kiss on the little sports-lover as they pose on a sidewalk. Over the weekend, Cavallari also used the social media platform to share one her family's greatest loves: football

Fan Fest today for The Bears. Making us excited for football season!! 🐻⬇️

A photo posted by Kristin Cavallari (@kristincavallari) on

And while the boys may outnumber the girls in the family—Cavallari is also mom to 2-year-old Jaxon Wyatt—she also loves raising 8-month old baby girl Saylor James.

This girl. She completely stole my heart 💕

A photo posted by Kristin Cavallari (@kristincavallari) on

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Talk about one happy family.