The NFL star shared a suite (and had lots of fun) with Taylor Swift and his wife Kylie Kelce as his younger brother Travis helped lead the Chiefs to victory.

Jason Kelce went all out cheering on his little brother Travis Kelce at the Kansas City Chiefs vs. Buffalo Bills game on Sunday.

Just a week after Jason’s Philadelphia Eagles were eliminated from the NFL playoffs, the loyal sibling stepped into a suite to root for the boys in red alongside his wife Kylie Kelce and Travis’ girlfriend Taylor Swift. As the Chiefs’ score went up, Jason stripped down, taking off his T-shirt to match the crowd’s high energy.

See how Travis’ supportive brother brought big team spirit to Highmark Stadium as the Chiefs secured themselves a spot in next weekend’s NFL Conference Championships.

Jason bared all after Travis scored his first touchdown of the game during the second quarter. The Chiefs later nabbed the win against the Buffalo Bills, coming out with a final score of 27-24.

After taking off his T-shirt, the spirited supporter — whose parents Ed and Donna Kelce stood behind him in the suite — leapt into the crowd of booing Bills fans.

Before he went topless, Jason wore a “Big Yeti” T-shirt as a reference to one of Travis’ nicknames. During an episode of their podcast New Heights, the Kelce brothers explained that the moniker is inspired by Travis’ appearance during “shirts and skins” pickup basketball games.

“I had the big beard, I had the long hair, I had the chest hair, back hair, arm hair, leg hair,” Travis said during a podcast recording in 2022. “Just a big old yeti out there.”