Taylor Swift and Travis Kelce posed for a selfie with Prince William, Prince George, and Princess Charlotte on the first night of the music mogul’s Eras Tour stop in London.

William – who celebrated his 42nd birthday on Friday – grinned in between Swift, 34, and the Kansas City Chiefs tight end while keeping a hand on both George, 10, and Charlotte, 9.

“Happy Bday M8! London shows are off to a splendid start ,” Swift captioned the Instagram post.

Prince William was also spotted grooving to Swift’s hit “Shake It Off” during the sold-out show at Wembley Stadium, which was also attended by Kelce, his brother Jason, and sister-in-law Kylie.