Taylor Swift performs at Wembley Stadium in London on June 21 as part of The Eras Tour.
Taylor Swift performing at Wembley Stadium in London on June 21.
  • Prince William attended The Eras Tour with Prince George and Princess Charlotte in London.
  • The British royals posed for photos with Swift and her boyfriend, Travis Kelce.
  • Footage showed William, who celebrated his 42nd birthday, dancing to "Shake It Off."

The Prince of Wales is a certified Swiftie.

William rang in his 42nd birthday on Friday at Taylor Swift's concert in London with his two eldest children, 10-year-old Prince George and 9-year-old Princess Charlotte.