Prince William showed off his dance moves at Taylor Swift’s Wembley concert, celebrating his 42nd birthday with his children, Prince George and Princess Charlotte. Footage of William dancing to “Shake It Off” went viral, with body language expert Judi James noting his “alpha edge” and suggesting he might have practiced.

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William, dressed in a shirt and blazer, danced energetically, swaying his arms and puffing his chest. James likened his moves to Topol, Stavros Flatley, and Shakira, describing them as “joyous” and “celebratory.”

The Prince and his children also posed for photos with Taylor Swift and her boyfriend, Travis Kelce. Swift shared a snap with the caption, “Happy Bday M8! London shows are off to a splendid start.”

Body language expert James observed that Princess Charlotte looked particularly excited, mirroring Swift’s pose, while William and George appeared more reserved.

William and his family enjoyed the concert alongside other attendees, including Zara and Mike Tindall. The event was part of Swift’s UK leg of The Eras Tour, which drew 89,000 fans.

Earlier, Princess Kate posted a birthday tribute to William with a beach photo of their children, while King Charles shared a nostalgic baby photo of William.