The photograph shows the pomp and circumstance of royalty, and the military, but with a glimpse of humour and humanity behind the facade.
No wonder the Duke of Cambridge loves this image of himself and his grandmother, Queen Elizabeth. In fact, it's his favourite shot of the two of them.
William, 29, who couldn't stop breaking into a smirk as the Queen inspected graduates of the Sandhurst military academy in 2006, has posted the photo on the Historypin website on the occasion of Elizabeth's Diamond Jubilee - and written a short, affectionate blurb about it.
"I felt especially proud to receive my commission as an officer in front of my grandmother, The Queen. She has been an incredible role model to me over the years," he writes.
"I remember The Queen's words as she addressed us from the tremendous parade ground at Sandhurst: 'You must be courageous yet selfless, leaders yet carers, confident yet considerate.' These qualities of selflessness and duty are values that The Queen has continuously demonstrated over the last 60 years and are qualities that remain very important to me."
Then just 24, William graduated from Sandhurst with another special lady present - his then-girlfriend Kate Middleton, who looked stunning in scarlet and would eventually become his wife.
Meanwhile, as the weekend approaches when the U.K officially celebrates the Queen's 60 years on the throne, a new poll reveals greater support for Prince Charles eventually succeeding Elizabeth and becoming king - rather than passing the crown directly to William.