Prince William Celebrates His 39th Birthday: A Look Back At His Most Significant Moments

Prince William, The Duke of Cambridge, celebrated his 39th birthday on Monday, just a day after Father's Day which he celebrated with his three children, Prince George, Princess Charlotte and Prince Louis.

Related: Prince William and Kate Middleton Have Launched Their Own Youtube Channel

In typical royal family fashion, Prince William's family members used the opportunity to share sweet and sentimental pictures of the prince. One of the cutest pictures was an image shared by Price Charles on Twitter of Prince William as a baby. He wrote alongside the two images he shared, "Wishing The Duke of Cambridge a very Happy Birthday today!"

William responded with a picture he posted on the official Duke and Duchess of Cambridge Instagram page by saying: "Thank you for all the birthday wishes and kind messages".

Over his years as a key member of the royal family, Prince William has certainly done a lot of good for the community. From supporting the efforts of medical staff during the pandemic to travelling around the world to experience new cultures, he has led with grace, love and presence.

If you are just as impressed with the prince as we are, here's a look back at some of his most influential moments.

Related: Prince William Accuses BBC of 'Failing' Princess Diana With Deceitful 1995 Interview

In honour of Prince William's birthday, The Prince of Wales and The Duchess of Cornwall shared a photo of a young Prince William on the lap of his father. Photo: The Prince of Wales and The Duchess of Cornwall/Twitter

Prince William and Catherine on a visit to Cleve Court Care Home in 2020. The royal couple paid tribute to the efforts of care home staff throughout the COVID-19 pandemic, during the final day of engagements on their tour of the UK. Photo: Paul Grover - WPA Pool/Getty Images

Prince William and Catherine, Duchess of Cambridge visit a settlement of the Kalash people, to learn more about their culture and unique heritage, on October 16, 2019 in Chitral, Pakistan. Photo: Samir Hussein - Pool/Getty Images

Prince William sits with Harry O'Grady as they make chocolate truffles as he takes part in a children's pretend snow ball fight during a Christmas party to deliver a message of support to deployed personnel serving in Cyprus and their families over the festive period. Photo: Richard Pohle - WPA Pool/Getty Images

Prince William prepares for his final shift with Cpt Dave Kelly of the East Anglian Air Ambulance based out of Marshall Airport. Photo: Heathcliff O'Malley - WPA Pool/Getty Images

Prince William, Catherine, Prince George, Princess Charlotte and Prince Louis clap for NHS carers as part of the BBC Children In Need and Comic Relief 'Big Night In at London. The 'Big Night In' brings the nation an evening of unforgettable entertainment while raising money for and paying tribute to those on the front line fighting Covid-19 and all the unsung heroes supporting their communities. Photo: Comic Relief/BBC Children in Need/Comic Relief via Getty Images

Prince William introduces new workplace mental health initiatives at Unilever House.The Duke of Cambridge highlighted the importance of mental wellbeing at work and introduced a new Heads Together workplace mental health initiative during the Workplace Wellbeing Conference. Photo: Chris Jackson - WPA Pool/Getty Images

Prince William and Catherine, talk with the family of paramedic Jahrin Khan via a mobile phone during a visit to Newham ambulance station in East London. Ms Khan has been unable to see her family through the pandemic. During the visit, The Duke and Duchess met with ambulance staff and paramedics to hear more about their experiences of working during the pandemic and about mental health and wellbeing. Photo: Richard Pohle-WPA Pool/Getty Images

Prince William speaks to four representatives from organisations which will benefit from the Royal Foundation's £1.8 Million fund to support frontline workers and the nation's mental health at the Sandringham Estate in Sandringham. Photo: Kensington Palace via Getty Images

Prince William gives a speech as he attends the first annual Royal Foundation Forum held at Aviva in London, England. Under the theme 'Making a Difference Together', the event will showcase the programmes run or initiated by The Royal Foundation. Photo: Chris Jackson - WPA Pool/Getty Images

Prince William meets guests after delivering a speech at the national launch of a programme to help veterans find work in the NHS, hosted by NHS Employers, at Chandos House in London, England. Photo: Matt Dunham - WPA Pool/Getty Images

Photo 1 of 11 In honour of Prince William's birthday, The Prince of Wales and The Duchess of Cornwall shared a photo of a young Prince William on the lap of his father. Photo: The Prince of Wales and The Duchess of Cornwall/Twitter

Photo 2 of 11 Prince William and Catherine on a visit to Cleve Court Care Home in 2020. The royal couple paid tribute to the efforts of care home staff throughout the COVID-19 pandemic, during the final day of engagements on their tour of the UK. Photo: Paul Grover - WPA Pool/Getty Images

Photo 3 of 11 Prince William and Catherine, Duchess of Cambridge visit a settlement of the Kalash people, to learn more about their culture and unique heritage, on October 16, 2019 in Chitral, Pakistan. Photo: Samir Hussein - Pool/Getty Images

Photo 4 of 11 Prince William sits with Harry O'Grady as they make chocolate truffles as he takes part in a children's pretend snow ball fight during a Christmas party to deliver a message of support to deployed personnel serving in Cyprus and their families over the festive period. Photo: Richard Pohle - WPA Pool/Getty Images

Photo 5 of 11 Prince William prepares for his final shift with Cpt Dave Kelly of the East Anglian Air Ambulance based out of Marshall Airport. Photo: Heathcliff O'Malley - WPA Pool/Getty Images

Photo 6 of 11 Prince William, Catherine, Prince George, Princess Charlotte and Prince Louis clap for NHS carers as part of the BBC Children In Need and Comic Relief 'Big Night In at London. The 'Big Night In' brings the nation an evening of unforgettable entertainment while raising money for and paying tribute to those on the front line fighting Covid-19 and all the unsung heroes supporting their communities. Photo: Comic Relief/BBC Children in Need/Comic Relief via Getty Images

Photo 7 of 11 Prince William introduces new workplace mental health initiatives at Unilever House.The Duke of Cambridge highlighted the importance of mental wellbeing at work and introduced a new Heads Together workplace mental health initiative during the Workplace Wellbeing Conference. Photo: Chris Jackson - WPA Pool/Getty Images

Photo 8 of 11 Prince William and Catherine, talk with the family of paramedic Jahrin Khan via a mobile phone during a visit to Newham ambulance station in East London. Ms Khan has been unable to see her family through the pandemic. During the visit, The Duke and Duchess met with ambulance staff and paramedics to hear more about their experiences of working during the pandemic and about mental health and wellbeing. Photo: Richard Pohle-WPA Pool/Getty Images

Photo 9 of 11 Prince William speaks to four representatives from organisations which will benefit from the Royal Foundation's £1.8 Million fund to support frontline workers and the nation's mental health at the Sandringham Estate in Sandringham. Photo: Kensington Palace via Getty Images

Photo 10 of 11 Prince William gives a speech as he attends the first annual Royal Foundation Forum held at Aviva in London, England. Under the theme 'Making a Difference Together', the event will showcase the programmes run or initiated by The Royal Foundation. Photo: Chris Jackson - WPA Pool/Getty Images

Photo 11 of 11 Prince William meets guests after delivering a speech at the national launch of a programme to help veterans find work in the NHS, hosted by NHS Employers, at Chandos House in London, England. Photo: Matt Dunham - WPA Pool/Getty Images

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Prince William Celebrates His 39th Birthday: A Look Back At His Most Significant Moments