Kate Middleton, Prince William and their children Prince George and Princess Charlotte have headed to Cardiff Castle for a visit today as part of The Queen's Platinum Jubilee celebrations.
Prince Louis was notably left at home, following his amusing appearance on the balcony of Trooping The Colour where his array of cheeky facial expressions stole the show.
The royals were visiting the castle ahead of a special Jubilee concert being held in the grounds later today, getting a look behind the scenes at the rehearsals and meeting some of the acts - including Bonnie Tyler.
During their visit, George and Charlotte got a go on the music decks and the family had a little singalong to a classic hit.
In a video shared to Twitter by royal expert Richard Palmer, Kate, William, Charlotte and George can be seen having fun as an orchestra performs a cover of Neil Diamond's Sweet Caroline.
The royals get involved in a little singalong and Kate appears to be having a great time, waving her hands like a conductor and laughing.
At the end of the song, they all give a big clap to the musicians.
The visit comes ahead of the Party at the Palace in London this evening, on the third day of Jubilee celebrations.
Prince William and Prince Charles are set to take to the stage to make speeches tonight during the star-studded event.
The pair will speak in honour of the monarch towards the end of the BBC show, taking place in front of Buckingham Palace.
Among the famous faces set to perform at the concert are Diana Ross, Alicia Keys, Queen + Adam Lambert and George Ezra.
They'll be singing to a live crowd of 22,000 people and a televised audience of millions.
As well as this the nation is being asked to sing along to Sweet Caroline as part of the Jubilee by BBC Radio 2.
Listeners of Zoe Ball's breakfast show picked the song as an "uplifting" melody and Radio 2 will be encouraging people across the nation to come together and take part in a singalong on June 5. They're hopeful that 10 million people will join in.
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