Cavallari, who is married to Chicago Bears quarterback Jay Cutler, took their children -- Camden, 4, Jaxon, 2, and Saylor, 10 months -- to the Bears' Fan Fest at the team's training camp in Bourbonnais, Illinois, on Saturday.
"Fan Fest today for The Bears. Making us excited for football season!!!" she captioned the pic.
She also documented the day with several cute Snapchats of Cutler's biggest fans.
Likewise, Jessie and her husband, New York Jets wide receiver Eric Decker, are also raising the next generation of football fans.
The 28-year-old singer and reality TV star took their 2-year-old daughter, Vivianne, and 11-month-old son, Eric Jr., to visit their father at the Jets training camp in Florham Park, New Jersey, on Sunday.
She posted this sweet snap of baby Eric wearing a Jets onesie while sitting in his father's lap as Vivianne stood close by.
"Go daddy go! As Vivi puts it! #proudjetsfamily," Jessie wrote.