Prince William and Prince Harry look very adorable when they were still young boys.

In an unearthed photo, the royal siblings are sitting on the stairs with their cousin, Zara Tindall in between them. Prince Harry and Prince William are both wearing a tartan skirt and since they are under the heat of the sun, they can’t help but squint in front of the camera.

The Duke of Sussex looks behaved with his hands over his lap in the photo. But the Duke of Cambridge, on the other hand, is making a funny face in front of the camera.

When the royal siblings were much younger, it was the second in line to the throne who had a reputation of being naughty. But when they got older, their relatives soon learned that Prince William is actually more serious than his younger brother.

Meanwhile, the same photo also features the other members of the royal family. Standing behind Prince Harry, Tindall, and Prince William were Peter Phillips, Queen Elizabeth II, Sarah Ferguson, Princess Beatrice, Princess Diana, Prince Philip, and Prince Charles.

Prince Charles, Prince Philip, and Princess Anne’s son are also wearing a tartan skirt. Princess Diana looks stunning in her all-white ensemble, and she is also standing beside her former best friend, Fergie. The Duchess of York is wearing a red long-sleeved top and skirt while carrying her eldest daughter.

The Queen is wearing a blue long-sleeved blouse and a printed navy-blue skirt. She is standing beside her eldest grandchild, Phillips, and in front of her husband, the Duke of Edinburgh.

The Royal Family’s photo was taken outside Balmoral, the Queen’s favorite vacation home. Growing up, Prince William and Prince Harry frequented Balmoral because this was where they used to visit their grandparents.

During a 2016 interview, Princess Eugenie said in the documentary “Our Queen At 90” that Her Majesty is at her happiest whenever she’s in Balmoral.

“I think she really, really loves the Highlands,” she said.

Princes William, Harry, Princess Diana Pictured: Princes William, Harry, Princess Diana applaud during the Wales vs France Five Nations Cup match at Cardiff Arms Park on February 1, 1992. Photo: Getty Images/Jean-Pierre Muller/AFP