It was the Culpo Bowl between the Carolina Panthers and NY Jets on Sunday ... 'cause Olivia Culpo and her sister, Sophia, got to watch their NFL star boyfriends face off against each other!!!
Of course, OC has been dating Panthers superstar running back Christian McCaffrey for about 2 years ... and her little sis went "IG official" with Jets WR Braxton Berrios back on Valentine's Day.
So, when the Jets and Panthers faced off in Charlotte in Week 1, the Culpo sisters had to split up and root for opposing teams .