In a video clip from 1985, Princes William and Harry bang enthusiastically on the keys of a piano as they take part in a photo-shoot at Kensington Palace, enjoying family life in perfect harmony.
Watched on by a glowing Princess Diana and a proud Prince Charles, three-year-old Prince William is encouraged to kiss his one-year-old sibling, Prince Harry.
William is at first reluctant, but then lands a cheeky smacker on Prince Harry’s head to cheers from onlookers before pulling quickly away.
At one point, their father, Prince Charles is seen playing peekaboo with a handkerchief to encourage his children to look in the right direction for the camera.
Just like any other youngsters, Princes William and Harry display an endearingly mischievous side – scampering away, hiding under tables and squirming out of their parents’ arms.
Prince Harry, who is just learning to walk, crawls over to photographer Tim Graham to get a closer look.
“Go on Harry, go get him!”, someone, possibly Diana, calls out from behind the video camera.
The children are joined by Charles and Diana for a selection of family snaps. The late Princess of Wales, Diana radiates as she sits on the floor next to her boys.
Prince William even helps his mother re-do her make up as he lovingly dabs her face with a powder pad.