Taylor Swift Fans Are 'Wheezing' Over Prince William's Unexpected Dance Moves at London Eras Tour

He's lightning on his feet!

Prince William appeared to be having the time of his life at the Eras Tour.

The future king was in attendance for Taylor Swift's sold-out concert in London on Friday, June 21, and he just couldn't seem to shake off some of the singer's catchy tunes.

In new fan-captured footage shared to X, William, 42, showed off his unexpected dance moves during the "Shake It Off" performance—and Swifties online can't calm down over the now-viral clip.

In the video, the camera zoomed in on one of the luxury suites at Wembley Stadium, where the Prince of Wales could be seen busting a move alongside the rest of his group for the evening, which also included his oldest son Prince George and his daughter Princess Charlotte.

Fans were delighted to see William letting loose during Taylor's show, especially since it was his 42nd birthday on Friday night.

"HE IS REALLY SHAKING IT OFF," one fan wrote on X after seeing the video of William's energetic movies, while another person joked, "he really does have the music in his mind saying it's gonna be alright !!!"

"I am sorry but prince william dancing to shake it off has me wheeeeeezing," read another fan reaction.

Others were overjoyed—but not surprised—to have proof that William is a fan of Taylor's 1989 hit song, with one user jokingly calling the future king "a 1989 girlie."

"And that's ladies and gents..the future king of England," someone else tweeted.

Another Swiftie quipped, "He’s a Prince but he’s a King for that."

William was also able to make the night even more memorable by snapping a photo with Taylor herself, which Kensington Palace and the "Fortnight" songstress both shared on social media after the show.

Taylor, 34, will be in London for a few more days, as she is scheduled to play two more back-to-back shows at Wembley this weekend, before later returning in August for five more sold-out concerts.

Next: Fans Say Travis Kelce Is 'Down Bad' for Taylor Swift in New Eras Tour Video from London