Prince William celebrated his 42nd birthday in style by dancing to “Shake It Off” at Taylor Swift London Eras Tour.

He brought along his two oldest children, Prince George, 10, and Princess Charlotte, 9, to enjoy the show at Wembley Stadium.

William, a known Swift fan, grooved to the music, marking a lively birthday celebration.

After the concert, Taylor Swift and her boyfriend, Travis Kelce, hosted a private meet and greet backstage with the royal family.

Swift took several selfies with Prince William and his kids, giving a special birthday shoutout to William on Instagram, saying, “Happy Bday M8! London shows are off to a splendid start 🇬🇧🇺🇸🤝.”

This marked the first photo Swift shared of Kelce on her Instagram grid.

Prince William also shared a photo from the event on the official Prince and Princess of Wales Instagram account, thanking Taylor Swift for the fantastic evening.

Many celebrities attended the concert, including Travis, Jason, and Kylie Kelce, Bridgerton’s Nicola Coughlan, and Queer Eye’s Jonathan Van Ness.

However, Kate Middleton and their youngest son, Prince Louis, 6, were not present.

Kate is currently undergoing cancer treatment and has kept a low profile, though she made a public appearance earlier this month at the Trooping the Colour parade.

Earlier in the day, the royal guard honoured Swift’s concert by playing “Shake It Off” during the Changing of the Guard.

Swift’s Eras Tour at Wembley Stadium continues from June 21 to June 23 and then again in August.

This isn’t the first time Swift’s tour attracted royal attention; Meghan Markle attended her concert in Los Angeles last August.