Travis Kelce poked fun at his brother, Jason Kelce, for sporting a shirt that was too small on his “Monday Night Countdown” debut.

The former Philadelphia Eagles player, 36, was introduced by ESPN host Scott Van Pelt, who explained the retired athlete was wearing a white button-up shirt he purchased “at the mall today” because he forgot his travel bag.

“It fits my belly now I’ve lost a little bit of weight but my tits are still struggling,” Jason responded while attempting to cover up his chest, which peeked through the dress shirt.

9Travis Kelce made fun of his brother, Jason Kelce, for wearing a small shirt on his first “Monday Night Countdown” appearance.ESPN/Instagram

9The retired athlete was forced to purchase the shirt at the last minute after forgetting his luggage.ESPN/Instagram

Travis, 34, got a kick out of his brother’s mishap as he took to the Instagram comments of the ESPN video to write, “Surprised he even bought a new one, and didn’t just go shirtless.”

The tight end seemingly alluded to when Jason ripped off his T-shirt to celebrate Travis’ touchdown during the Kansas City Chiefs game against the Buffalo Bills in January.

The iconic moment left Travis’ girlfriend, Taylor Swift, stunned as Jason then jumped from their VIP suite to the stands at Highmark Stadium.

9“It fits my belly now I’ve lost a little bit of weight but my tits are still struggling,” he said.ESPN/Instagram

9Travis poked fun at his brother in the comments of ESPN’s video posted to Instagram.NBAE via Getty Images

9“Surprised he even bought a new one, and didn’t just go shirtless,” the tight end quipped.Getty Images

9Travis was seemingly referring to when Jason ripped off his T-shirt during the Kansas City Chiefs game against the Buffalo Bills in January.Getty Images

While the “Lover” songstress cheered for Jason, his wife, Kylie Kelce, attempted to take control of the situation as she shouted at the former professional footballer to “get [his] ass back in here.”

Travis learned about his brother’s antics immediately after the game, telling Westwood One Sports that it didn’t “surprise [him] one bit.”

“I love that guy. And every time we’re not on the field together, we’re always rooting for each other,” he said with a smile.

9At the time, the retired NFL star was celebrating Travis’ touchdown.MLB Photos via Getty Images

9The moment left Travis’ girlfriend, Taylor Swift, shocked.GC Images

9The Chiefs star, meanwhile, wasn’t surprised to learn about his brother’s antics.Getty Images for American Century Investments

At the time, Jason attended his little brother’s first game of the 2022-2023 Season after the Eagles lost to the Tampa Bay Buccaneers during the playoffs.

Jason also supported Travis at the 2024 Superbowl, alongside Swift and her A-list crew, as the Chiefs defeated the San Francisco 49ers in Las Vegas.

In March, the father of three announced he was retiring from the NFL after 13 seasons.