It’s the affectionate family nickname that tells the world he’s one of his brother’s biggest fans.

Seen in these exclusive pictures obtained by DailyMail.com Jason Kelce, 36, stepped off a private jet in Buffalo early Sunday afternoon wearing a bright yellow T-shirt with a cartoon figure of his little brother and the words, ‘Travis Kelce Big Yeti,’ ahead of the AFC Divisional playoff against the Bills.

Hard to imagine a more significant day for Kansas City or the Kelce family, aside from Super Bowl LVII, which Jason’s Eagles lost to Travis’ Chiefs.

The meeting on the field will decide whether the Chiefs advance to the AFC Championship in Baltimore next weekend or if their season will come to an end on Sunday.

Meanwhile, up in the VIP boxes Taylor Swift, 34, is expected take another step closer to the Kelce clan as she meets her NFL stud’s big brother and his wife Kylie Kelce for the first time today.

Jason, Kylie and family patriarch Ed – wearing bright red Chief’s starter jacket and a jersey bearing his younger son’s No. 87 – all trudged across the snowy airfield to a waiting sprinter van as the countdown to the AFC Divisional game began in earnest.

Travis, 34, and the rest of his team touched down in New York state 3:30pm on Saturday. The tight end cut a striking figure in mustard yellow suit, striped shirt, beanie hat and shades.

The bold look drew some good-natured ribbing from Jason who joked, ‘Looks like he’s auditioning for a new Wes Anderson film.’

If Travis looked particularly stone-faced yesterday it was perhaps little wonder.

Shortly before taking off from Kansas City he learned the NYPD arrested a suspected stalker allegedly trying to get into Swift’s Tribeca apartment earlier in the day.

Jason, of course, has a free weekend after the Eagles were eliminated from the postseason by the Tampa Bay Buccaneers on Monday. It has plunged Jason’s long-term football future into doubt, with reports on Tuesday morning emerging that he told the Eagles locker room that he is retiring.