This weekend, the Prince of Wales celebrated his 42nd birthday by attending Taylor Swift's Eras Tour concert at Wembley Stadium in London—and he showed off his best dance moves in the process.
Prince William, who was joined by his children, Prince George (10) and Princess Charlotte (9), was seen in the stands grooving to Swift's popular hit song, "Shake It Off"—and one observant fan captured rare footage of the prince letting loose in his blue ensemble.