The picture of the interaction shows at least one $100 bill exchanging hands.
And after the game, a photo which has gone viral on social media appears to show the pop sensation tipping food runners from her suite.
The tight end wore a turtleneck sweater, khaki pants and sunglasses as he made his way to a team bus.
It wasn’t Kelce’s finest performance as he totaled five catches for just 28 yards.
His day also included an uncharacteristic drop in the endzone, which caused Swift to yell ‘f***’ in frustration.
It was the seventh time that Swift, who was joined by her father, Scott, watched Kelce in person this season.
The 34-year-old finally had something to cheer about after watching the Chiefs lose their last two games as she beamed from a suite during their 27-17 win.
She was even caught sticking her tongue out as she made an appearance on the big screen to a mix of cheers and boos from the fans gathered in Foxborough.
Taking shelter in one of Gillette Stadium’s suites, Swift was spotted chatting with wife of quarterback Patrick Mahomes, Brittany, and sge became so excited by a Chiefs’ touchdown that she lifted her new friend off her feet in celebration.
The global superstar was also joined by close pals Alana Haim, who is a member pop rock band Haim with her two sisters, and stylist Ashley Avignone.
Swift’s dad, Scott, also made the trip up to the Boston area and, despite being a renowned Philadelphia Eagles fan, he appeared to be wearing a red Chiefs jersey for the occasion.