Watch: Prince William grooves to Taylor Swift's 'Shake It Off' at Eras Tour concert in London

Prince William proved he's got the moves as he was spotted dancing enthusiastically to Taylor Swift's "Shake It Off" during her Eras Tour concert on Friday, June 21. The royal, 42, was seen in fan-captured footage grooving along to the hit song from Swift's 1989 album, donning a stylish blue ensemble.

Princess Charlotte, 9, accompanied her father to the concert and was seen swaying to the music by his side. The pair seemed to be thoroughly enjoying themselves as Swift, 34, delivered a captivating performance onstage.

The concert, marking the first night of Swift's Eras Tour in the U.K., featured a memorable moment when the pop star posed for a selfie with Prince William, Prince George, and Princess Charlotte. The photograph shared on the Prince and Princess of Wales' official Instagram account showed a beaming Swift alongside the royals. "Thank you @taylorswift for a great evening! #LondonTSTheErastour," the caption read.

Swift also shared her own snapshot on Instagram, featuring herself with Prince William, Prince George, 10, Princess Charlotte, and her boyfriend, NFL player Travis Kelce. This marked the first time Swift and Kelce, 34, appeared together in a social media post. "Happy Bday M8! London shows are off to a splendid start," Swift captioned her post, referencing Prince William's birthday.

While Prince William, George, and Charlotte reveled in Swift's performance, Prince Louis, 6, likely stayed home with their mother, Kate Middleton. The Duchess of Cambridge has been largely out of the public eye in recent months as she continues her cancer treatment. However, she made a notable appearance on June 15 at Trooping the Colour, the annual celebration of King Charles' birthday, marking her first public outing with the royals since Christmas.