Kelce, who was seen in the audience for all three nights so far of Swift’s London shows, came on stage to cheers as Swift transitioned from “The Smallest Man Who Ever Lived” to the next song on the set list, “I Can Do It With A Broken Heart.”

In other Eras Tour shows, it’s usually Swift’s backup dancers who pick her up on the floor after the breakup anthem from “The Tortured Poets Department.”

This time, it was Kelce — dressed in a top hat and tails like Swift’s two other backup dancers — who carried her to a sofa to get ready for the next song, about performing every night while dealing with heartbreak.

“‘So Long London’ should have been titled, ‘I’m actually taking London,’” TikToker Jake Deyton posted in a video, referring to the 2024 song that is an apparent reference to her breakup last year with British actor Joe Alwyn after over six years together.

Swift reportedly lived in London with Alwyn, whom fans have long speculated is also the inspiration for the love song “London Boy” in her 2019 album.

The skit only lasted about a minute, but Swifties were, unsurprisingly, delighted. Videos and livestreams of Kelce’s cameo were accompanied by loud screams in the audience.

“That’s one way to hard launch a relationship,” a fan wrote.

“TRAVIS KELCE HAS OFFICIALLY LAUNCHED HIS ERA,” was the caption on one video. “IF HE IS NOT SUPPORTING YOU TO THIS LEVEL HES GOTTA GO LADIES!!” read a comment underneath.

On stage, Kelce powdered Swift’s nose and told her to smile before the next act.

On social media, fans crowdsourced for different angles of Kelce’s cameo and speculated on how it came to be.

Some noted that Kelce was wearing what appeared to be a custom-made costume and red-soled shoes suggesting that his surprise appearance was planned in advance.

One joked that Kelce, having been to several Eras Tour concerts as Swift’s boyfriend, was now itching to become part of the show. (Swift also attended several Chiefs games during the most recent NFL season, including the Super Bowl in Las Vegas, where she flew after playing an Eras Tour show in Tokyo.)

Swift referenced her relationship with Kelce at multiple Eras Tour performances in the past, notably by changing the lyrics in “Karma,” her closing song.

The lyrics went from “Karma is the guy on the screen / coming straight home to me” to “Karma is the guy on the Chiefs / coming straight home to me.”

During the London stint, she also posted a photo of herself, Kelce and William, Prince of Wales, and two of his children, Princess Charlotte and Prince George, prompting the Daily Mail to dub it: “Royalty all around.”