The eldest son of Queen Elizabeth II and Prince Philip, His Majesty Charles Philip Arthur George III, now King Charles III was born on November 14 1948.
After living his life as Charles, Prince of Wales and heir to the throne for over 70 years, the now King Charles III is officially the King. Over the years, Charles has had quite the career as a working Royal, championing causes that are very close to his heart.
But how much do you know about him from when he was young? From his first official photos as baby to his marriage to Princess Diana, we take a look back through King Charles' younger years...
King Charles young
Queen Elizabeth II holding baby Prince Charles
Queen Elizabeth II holding baby King Charles in 1949.
Prince Charles and Princess Anne in the Garden of Royal Lodge, Windsor.
King Charles and Princess Anne in the Garden of Royal Lodge, Windsor.
Princess Anne, 4 and Prince Charles,
Princess Anne, 4 and King Charles, 6, walk through Green Park with their Governess on their return to Buckingham Palace after visiting the Queen Mother at Clarence House.
Prince Charles and Princess Anne
King Charles and Princess Anne paid a visit to the B.B.C. Lime Grove Studios to see the programme ''Studio E'' on Children's Television. This photo shows King Charles and Princess Anne with David Attenborough and 'Cocky' the Cockatoo.
Prince Charles and Princess Anne
King Charles and Princess Anne at a picnic in Malta with their Uncle and Aunt - Lord Mountbatten and Lady Louise.
Young King Charles aged 7
A very young Prince Charles aged 7 at Balmoral.
Young Prince Charles in his school uniform.
Young King Charles in his school uniform.
National Savings stamps
National Savings stamps were a popular savings scheme aimed at children in the 1950s and 1960s. The stamps were sold in schools and then stuck into savings books. King Charles and Princess Anne were featured on the stamps. King Charles stamp started with a value of one shilling, later increased to half a crown.
King Charles, accompanied by Prince Philip, arriving at Gordonstoun, his new school in Scotland.
How smart does King Charles look in his school photo from Gordonstoun School?
Prince Charles at Cambridge
Prince Charles walking in Downing Street, Cambridge, UK, 12th October 1967 at the start of his term at Trinity College.
Prince Charles (then aged 19yrs) and his father Prince Philip,
A father and son moment between King Charles (then aged 19yrs) and his father Prince Philip, Duke of Edinburgh during a polo match at Cowdray Park in West Sussex.
Queen Elizabeth II family
Queen Elizabeth II at Balmoral with King Charles, Princess Anne, Prince Edward, Prince Andrew and Prince Phillip.
Prince Charles and Lady Diana
The engagement of King Charles and Lady Diana Spencer, February 1981.
Princess Diana and Prince Charles
Princess Diana and King Charles on the Buckingham Palace balcony during their wedding day on 29 July 1981.
Charles with his newborn son
King Charles with his newborn son, Prince William, 1982.
Prince Charles swimming
King Charles swimming at Cottesloe Beach in Perth Australia, April 1983.
Prince Harry birth
Prince Harry soon after his birth being held by his mother and father, September 1984.
Major Ronald Ferguson and Prince Charles
Major Ronald Ferguson and King Charles at Windsor playing polo in 1986.
Young king charles and Prince harry
Prince Charles with Prince Harry aged one at home in Kensington Palace.
The Prince and Princess of Wales with sons
The King and Princess of Wales with sons Prince William, right, and Prince Harry prepare for a cycling trip in Tresco during their holiday in the Scilly Isles.
Young King Charles with his mother Queen Elizabeth
A sweet photo of Prince Charles kissing the late Queen's hand after she presented him with a prize at polo in Windsor, 1985.
The Royal Famil
The Royal Family watching a flypast from a balcony at Buckingham Palace to mark the Queens birthday in October 1989.