Travis Kelce wasn’t surprised in the slightest to hear about his brother Jason’s viral antics during the Kansas City Chiefs’ playoff win over the Buffalo Bills.

The Chiefs moved one step closer to a second consecutive Super Bowl appearance on Sunday night, when they held on for a 27-24 victory following another epic battle with the Bills.

Patrick Mahomes extended his winning playoff streak over quarterback rival Josh Allen to 3-0, and it was also an evening to remember for Kelce – who scored two touchdowns to help his team prevail in a Divisional Round classic.

As he scored his first in Buffalo, NFL cameras cut to the Chiefs tight end’s brother Jason in his suite at Highmark Stadium, where the Philadelphia Eagles veteran was hilariously seen wildly celebrating the touchdown with his shirt off despite the 20 degree weather.

The older Kelce brother was watching the drama from one of the best seats in the house – where he met his brother’s girlfriend Taylor Swift for the first time – but couldn’t contain his emotions when Travis scored a vital touchdown for the Chiefs ending his run of eight games without one.

Jason was filmed roaring into the night without his top on, holding a can of beer in the freezing weather. His wife Kylie watched on stunned in the background as the celebrations in suite erupted, while Swift was seen laughing at his antics in their suite.

And during one of his post-game interviews, Travis was informed by an NFL reporter that his brother had whipped his shirt off in the stands at Highmark.

He replied: ‘My brother was shirtless?! No, that doesn’t surprise me one bit.

That doesn’t surprise me one bit, I love that guy! And every time we’re not on the field together we’re always rooting for each other.’

As well as stealing the show with his animated celebrations, Jason was pictured alongside Swift – who is enjoying a whirlwind romance with his brother – for the very first time on Sunday night.

With the Eagles out of the playoffs, Jason and wife Kylie headed to Buffalo to cheer Travis on in his own game. He was filmed wearing a red t-shirt saying ‘Big Yeti’ and enjoying a beer in the moments before the game began.