Britain's Queen Elizabeth is joined by members of the Royal Family on the balcony of Buckingham Palace as they watch a fly past to mark the centenary of the Royal Air Force in central London

If you've been paying attention to the British Royal Family over the years, who would've noticed that they've been changing with times, and thanks to social media have been able to keep us to do that of all their activities.

And on Friday, they shared — which we're assuming is a tribute to the recently released Abba-inspired movie "Mamma Mia!: Here We Go Again" — and Queen Elizabeth, no doubt.

Taking to the Royal Family's official Twitter account, they shared a video of The Band of the Royal Logistic Corps playing "Dancing Queen" during the Changing of the Guard at Buckingham Palace. They challenged the royal fans to guess the song.

And tweeps were happy to oblige.