Royal fans were surprised with a brand new photo of the new 'Fab Four' at the weekend.
MORE: Royal family makes major change – and it affects Prince Harry and Meghan Markle
A new image was shared on the official Instagram page for King Charles and Queen Camilla, showing the couple posing alongside Prince William and Princess Kate at Buckingham Palace.
WATCH: Kate Middleton reveals what Prince Louis told her when he was told about Queen's death
The foursome are all dressed in black to mark the official mourning period for the Queen; the snapshot was taken as the royals hosted heads of state on 18 September, ahead of the late monarch's state funeral.
READ: Princess Kate reveals the difficult task Prince George is trying to master
MORE: Prince George, Princess Charlotte and Prince Louis' cute nickname for Queen Camilla revealed
But there was something unusual about the image that made it all the more remarkable.
Fans were delighted by the photo of the new 'Fab Four'
Despite the historic importance of the photo, the King opted for a casual approach, and can be seen with one hand on his pocket. Furthermore, he has his arm placed lovingly around Queen Camilla, who in turn has her arm wrapped around his waist.
READ: Why Princess Anne is called the Princess Royal and what the title means
MORE: Mike Tindall reveals biggest regret about his relationship with the Queen
It's a very rare public display of affection from a monarch and perhaps a sign of things to come from this the new generation of royals; notably Charles's daughter-in-law is mirroring his down-to-earth stance.
The foursome have adoped a more relaxed tone
Kate, dressed in a long-sleeved black dress, can be seen with her own arm around the waist of Prince William, who stands with his hands clasped together in front.
READ: How Prince William & Princess Kate are helping their children cope with grief at home
MORE: Princess Kate's surprise appearance has fans all saying the same thing
Fans went wild for the new image, with one stating: "Amazing photo, the present and the future." A second wrote: "The authentic fantastic four, Queen Elizabeth would be so proud of them." And a third said: "Such a beautiful picture," with a string of red love hearts.
King Charles is openly showing his affection for his Queen
It follows a reshuffling of the royal family’s official website in the wake of the Queen's death, thought to be in line with Charles's desire to 'streamline' the monarchy.
READ: Princess Anne's past romance with Queen Camilla's ex-husband: Details
MORE: Prince William and Princess Kate's trip to America revealed – details
Most notably, Prince Harry and Meghan Markle's profiles on the site have been moved lower down, below the likes of the Duke and Duchess of Gloucester, the Duke of Kent, Princess Alexandra, who is 56th in the line of succession, and Prince and Princess Michael of Kent.
Harry and Meghan stepped down as working royals
It's thought that the repositioning has been made to prioritise working members of the royal family.
Harry's link now appears third from bottom; just above his wife Meghan and Prince Andrew, who appears at the end of the page.
Make sure you never miss a ROYAL story! Sign up to The Royal Explainer newsletter to receive your weekly dose of royal features and other exclusive content straight to your inbox.
