Prince William Shared the Cutest Throwback Photo of Himself Twinning with Prince Harry in the '80s

Kimberly Truong
Prince William Shared the Cutest Throwback Photo of Himself Twinning with Prince Harry in the '80s

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In honor of a special cause, Prince William shared a rare throwback photo of himself with brother Prince Harry and their mother, Princess Diana.

On Monday, Kensington Palace shared an Instagram post honoring 999 Day, also known as Emergency Services Day, which celebrates the work of police, fire, and emergency medical services in the U.K. One of the images was of Prince William, Prince Harry, and Princess Diana, with the young brothers playing on a fire truck (in matching blue coats) as their mother watches.

"The first photograph in this post is of The Duke of Cambridge and The Duke of Sussex and their mother Diana, Princess of Wales, with their cousins Peter Phillips and Zara Tindall in the yard of the Old Fire Station in the grounds of Sandringham House in 1988," the caption reads.

View this post on Instagram

Today marks #999DayUK, when we celebrate and say thank you to our incredible Police, Fire and Emergency Medical services 👮‍♀👨‍🚒👩‍⚕ and all our specialised emergency services for all that they do to keep us safe. The first photograph in this post is of The Duke of Cambridge and The Duke of Sussex and their mother Diana, Princess of Wales, with their cousins Peter Phillips and Zara Tindall in the yard of the Old Fire Station 🚒 in the grounds of Sandringham House in 1988. On 999 Day later today The Duke will visit @TheFirefightersCharity at Harcombe House in Devon to hear about the support that the centre provides to members of the fire and rescue service and their families, and meet representatives from across the emergency services sector. On the extraordinary work of our emergency services, The Duke of Cambridge said: "As a society, we owe our wellbeing, and indeed our lives, to the men and women in our emergency services who work tirelessly to protect us in some of the most difficult circumstances. It is only fitting that we should recognise the vital role that they play, and pay tribute to the bravery and dedication of those who have made the ultimate sacrifice for their communities." 999 Day begins annually at 9am on the 9th September (the 9th hour of the 9th day of the 9th month) and is held to pay tribute to the invaluable work that is carried out by the emergency services and responders. 📷 Getty images / Press Association

A post shared by Kensington Palace (@kensingtonroyal) on Sep 9, 2019 at 2:42am PDT

Also on Monday, Prince William visited a group of firefighters at Harcombe House and launched a texting service through Crisis Text Line in the U.K. that’s specifically for frontline responders.

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"As a society, we owe our wellbeing, and indeed our lives, to the men and women in our emergency services who work tirelessly to protect us in some of the most difficult circumstances," he said on Kensington Palace's Instagram caption. "It is only fitting that we should recognize the vital role that they play, and pay tribute to the bravery and dedication of those who have made the ultimate sacrifice for their communities."