Happy birthday, Prince Louis! The pint-sized royal is officially 3 years old.
In his 36 months of life, Louis Arthur Charles has traveled around England with his parents, the Duke and Duchess of Cambridge (aka, Prince William and Catherine), and his older siblings, Prince George and Princess Charlotte. He has also mastered the precious art of a mostly toothless smile.
In honor of his birthday, we’ve rounded up some adorable photos of the little prince.
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The Duke and Duchess of Cambridge depart St Mary's Hospital with newborn Prince Louis on April 23, 2018.
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A close-up of Prince Louis as he departed the hospital with his parents.
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Prince Louis in a photo taken by the Duchess of Cambridge at Kensington Palace a few days after his birth.
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Princess Charlotte with her brother Prince Louis on her third birthday in a photo taken by the Duchess of Cambridge on May 2, 2018 at Kensington Palace.
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Prince Louis with his mother on the day of his christening on July 9, 2018.
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Official photograph taken after the christening at Clarence House.
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Prince Louis carried by his mother as they arrive for his christening at St James's Palace in London.
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Prince Louis carried by his mother as they arrive for his christening.
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A family portrait at Clarence House in Westminster on Sept. 5, 2018 to celebrate Prince Charles' 70th birthday.
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Prince Charles and Prince Louis during the gathering at Clarence House.
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A candid moment during the family photo shoot at Clarence House.
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Prince Charles shares a moment with Prince Louis and the Duchess of Cambridge during the family photo shoot.
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The family Christmas card photo, taken in fall 2018 by photographer Matt Porteous.
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The Duchess of Cambridge took this photo of Prince Louis at their home in Norfolk in April 2019 to mark his first birthday.
Duchess of Cambridge/Reuters
Another photo by the Duchess of Cambridge at the Norfolk home.
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And one more shot by the prince's mom at Norfolk in April 2019.
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Prince William and Prince Louis play with a rope swing in the Adam White and Andree Davies co-designed "Back to Nature" garden ahead of the RHS Chelsea Flower Show on May 19, 2019 in London, England.
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The Duchess of Cambridge and Prince Louis explore the "Back to Nature" garden.
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Another photo of Prince Louis and his family at the Back To Nature garden at the RHS Chelsea Flower Show.
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The Duke and Duchess of Cambridge and their children watch a flypast from the balcony of Buckingham Palace during Trooping The Colour, the Queen's annual birthday parade, on June 8, 2019 in London, England.
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Prince Louis waves from the Buckingham Palace balcony during the Trooping The Colour festivities.
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Prince Louis and Princess Charlotte wave from a window of Buckingham Palace during the Trooping The Colour.
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The Duchess of Cambridge, Prince Louis and Princess Charlotte attend the King Power Royal Charity Polo Match at Billingbear Polo Club on July 10, 2019 in Wokingham, England.
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The Duchess of Cambridge and her children at the King Power Royal Charity Polo Match.
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Prince Louis and the Duchess of Cambridge at the King Power Royal Charity Polo Match.
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The Duchess of Cambridge took this photo of Prince William, Prince Louis, Princess Charlotte and Prince George in Norfolk in 2019.
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Prince Louis attends a Christmas lunch for members of the Royal Family hosted by Queen Elizabeth at Buckingham Palace on December 18, 2019 in London.
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The Duchess of Cambridge took this photo of Prince Louis at their home in Norfolk in April 2020 to mark his second birthday.
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Another photo by the Duchess of Cambridge at the Norfolk home.
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A close-up from Prince Louis' birthday photo shoot at home in Norfolk.
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And one more shot by the prince's mom at Norfolk in April 2020.
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The royal family claps for England's National Health Service employees on April 23, 2020, a day set aside to honor the workers.
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The Duchess of Cambridge took this photo of Prince William, Prince George, Princess Charlotte and Prince Louis in Norfolk in June 2020.
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The Duchess of Cambridge also took this photo of Prince William and their children in Norfolk in June 2020.
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The royal family spends time with Sir David Attenborough in the gardens of Kensington Palace in September 2020.
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Another photo taken in the gardens of Kensington Palace during Attenborough's visit.
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The family's official 2020 Christmas card photo, taken in fall 2020 at Anmer Hall in Norfolk.
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The royal family attends a special pantomime performance at London's Palladium Theatre to thank essential workers and their families for their efforts throughout the pandemic on Dec. 11, 2020.
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Louis arriving at the London Palladium.
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Prince Louis with the Duchess of Cambridge and Princess Charlotte at the performance.
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The Duchess of Cambridge took this photo of Prince Louis at home on the morning of his first day at the Willcocks Nursery School at Kensington Palace on April 21, 2021.
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