You’re not on your own, kid.

Taylor Swift’s brother, Austin Swift, came to the defense of a fan after security tried to remove her from the singer’s Eras Tour concert in Indianapolis on Saturday for wearing a Travis Kelce costume.

A video posted on TikTok showed Austin intervening with security guards when the Swiftie tried to get Kelce’s attention in the VIP area after the Super Bowl champion made a surprise appearance at the show.

The fan was dressed up as the tight end in a Kansas City Chiefs uniform with an “87” jersey, gloves and a helmet — which the event employees appeared to take issue with.

A security guard was seen grabbing the fan by the arms and pushing her away while saying the helmet was “not allowed.”

Not long after, Austin, 32, walked over to diffuse the situation. “Hey, let’s not put hands on people,” he scolded the guard.

Austin then addressed the fan, telling her, “I’m sorry about that. It’s a really cool costume.”

The two chatted a little more before he said, “You guys enjoy the concert. Have a great night.”

He also gave her some guitar picks, per the video, which the TikTok user captioned, “Austin Swift saving my sister from getting kicked out of Indy [night 2].”

The situation took place after Kelce, 35, made a late entrance to support his pop star girlfriend at Saturday’s show.

A source exclusively told Page Six on Monday that Taylor, 34, and her family had no idea he was going to attend due to his football schedule.

“[Taylor’s mom] Andrea and Austin didn’t think Travis was going to be able to make it,” the insider told us.

“They were shocked when he showed up. It was an amazing surprise and they were thrilled he was able to be there for such an important occasion.”

The source further told Page Six the NFL star was determined to be in the crowd as the “Blank Space” singer wrapped up the US leg of her Eras Tour.

“Travis had practice earlier that day and he wasn’t even sure if he was going to be able to make it,” the insider said.

“It was a last-minute decision. Thankfully, he was able to get out of practice on time and show up.”

The 14-time Grammy winner returned the favor on Monday as she cheered on the Chiefs in their victory over the Tampa Bay Buccaneers at Arrowhead Stadium.

She showed her allegiance to the home team in a vintage leather Chiefs varsity jacket, denim shorts and black Christian Louboutin cowboy boots.

At one point, Taylor was spotted happily celebrating a touchdown alongside her mom, Andrea, and Travis’ mother, Donna Kelce.