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.

Travis Kelce wasn’t surprised to hear about brother Jason’s viral antics during the Chiefs’ win over the Bills on Sunday night

A shirtless Jason Kelce was seen celebrating wildly as Travis scored his first touchdown

The 36-year-old Eagles veteran was in a suite alongside his brother’s girlfriend Taylor Swift

Travis admitted he loves his brother after hearing about his viral moment after the victory

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.

Kelce scored two touchdowns as Kansas City edged out a thriller in Buffalo on Sunday night

Meanwhile in the stands, Jason was pictured meeting Swift for the very first time at Highmark

The pop star was also pictured in the suite alongside Kylie Kelce (right) and Donna Kelce

Travis partied with a massive group of friends after an epic Chiefs victory Sunday night

It is the first time they have been pictured with the pop star since her and Travis went public with their relationship in late September, when she headed to Arrowhead Stadium in Kansas City to cheer the Chiefs on against the Bears.

There had been reports recently that Swift has an ‘awkward relationship’ with Jason and Kylie – who have typically been more introverted compared to Travis, even before he started dating the most famous person on the planet.

Kylie said back in November that she prefers watching games from the stands with fans rather than in a suite – but given the 20 degree temperatures in Buffalo on Sunday night, it was a good time to make an exception.

After celebrating without his shirt on, Jason was also filmed jumping out of the window of his box and climbing into the stands to celebrate with the thousands of fans packed into the stadium. He necked the rest of his beer before climbing back through the window in extraordinary scenes.

Pat McAfee shared the video of him entering the stands on his own X account and wrote: ‘Hopped back up in the suite WAY TOO EASILY… what an absolute beast.’

Pictures showed him knocking back even more cans of beer and reaching out to fist-bump the fans in rows nearby.

The tight end also appeared to blow a kiss towards his loved ones during Sunday’s victory

Jason could also be seen chugging a beer alongside fans while still shirtless at the game

The Chiefs shared the video of Eagles man Jason’s celebration, calling him: ‘No 1 hype man.’

And the NFL shared a picture of Jason screaming with the caption: ‘WE HAVE REACHED PEAK JASON KELCE.’

Before the game, Jason was seen downing beer among the fans tailgating at Highmark Stadium before kickoff – with his New Heights podcast account sharing the clip and calling him ‘man of the people’.

It comes amid the 36-year-old considering his future in the game after his Philadelphia Eagles team lost in the first round of the playoffs on Monday night.