The (then) Duchess of York holding her infant daughter Princess Elizabeth in 1926. Picture: From a painting by John St Helier Lander.

Princess Elizabeth of York in 1927. Picture: Hulton-Deutsch Collection/Corbis

Princess Elizabeth in 1928. Picture: Central Press/Hulton Archive/Getty Images

Princess Elizabeth of York in 1929. Picture: Hulton-Deutsch Collection/CORBIS

The (then) Duke of York with his daughter Princess Elizabeth in May 1930. The picture was believed to have been taken by the Duchess of York. Picture: The Royal Collection Trust

The Duchess of York (later Queen Elizabeth the Queen Mother) with her daughters Princess Elizabeth and Princess Margaret Rose in 1931.

Princess Elizabeth in a carriage with her grandparents King George V and Queen Mary near Balmoral, 1932. Picture: Daily Mirror/Mirrorpix/Mirrorpix via Getty Images

1933 – Princess Elizabeth playing with a doll in a toy pram outside the Welsh House, a miniature house presented to the princesses by the people of Wales in the grounds of the Royal Lodge, Windsor. Picture: Central Press/Getty Images

Princesses Elizabeth and Margaret Rose of York with their mother, the Duchess of York in 1934. Picture: Bettmann/CORBIS

Princess Elizabeth in 1935. Picture: Universal Images Group via Getty Images

Princess Elizabeth at her home at 145 Piccadilly, London, July 1936. Picture: Lisa Sheridan/Studio Lisa/Hulton Archive/Getty Images

At the Coronation of King George VI, May 1937: Queen Elizabeth (later the Queen Mother) with Princess Elizabeth.

May 25, 1938 Queen Elizabeth (later the Queen Mother) with Princesses Margaret and Elizabeth watching the king present new colours to the 2nd/Battalion of Grenadier/Guards

Princess Elizabeth in 1939. Picture: PLANET NEWS / AFP

June 1940: Princess Elizabeth playing a piano at Windsor Castle, Berkshire. Picture: Lisa Sheridan/Studio Lisa/Getty Images

July 1941: Queen Elizabeth with her daughters Princess Elizabeth and Princess Margaret in the grounds of Windsor Castle, Berkshire. Picture: Lisa Sheridan/Studio Lisa/Getty Images

April 1942 – Girl Guides Princess Elizabeth places Princess Margaret’s arm in a sling, Windsor. Picture: Studio Lisa/Getty Images

1943 – Princess Elizabeth aged 17. Picture: Camera Press agency

1944 – Princess Elizabeth with her pet corgi Sue or Susan at Windsor Castle. Picture: Lisa Sheridan/Hulton Archive/Getty Images

1945 – Princess Elizabeth taking out the plugs of a car during training at an ATS training centre, in Southern England/ Picture: Central Press / AFP) Picture: AFP

1946, Princess Elizabeth. Picture: Lisa Sheridan/Studio Lisa/Hulton Archive/Getty Images

July 10, 1947 – Princess Elizabeth and Lt Philip Mountbatten at the announcement of their engagement.

December 16, 1948 – Princess Elizabeth of England and her son Prince Charles. Picture: Intercontinentale / AFP)

1949, Princess Elizabeth with her baby Prince Charles. Picture: Intercontinentale / AFP

1950, Princess Elizabeth with Princess Anne, born August 18. Picture: STF / AFP

1951, Princess Elizabeth with her two children, Princess Anne and Prince Charles on 1951. Picture: Central Press / AFP

September 28, 1952: Queen Elizabeth II at Balmoral Castle with one of her corgis. Picture: UPI

June 2, 1953 –The Queen rides in the state coach to Westminister Abbey for her coronation.

1954 Australian royal tour – the Queen in Warrigal. Picture: The Herald 4/3/1954

August 22, 1955 – The Queen with Princess Anne, Prince Charles and their nurse, Helen Lightbody, at a stall in Abergeldie Castle, near Balmoral Castle in Aberdeenshire. Picture: Fox Photos/Getty Images

1956 – The Queen with Prince Charles at Windsor Great Park during a polo match. Picture: Getty

1957 – The Queen’s Christmas message.

June 1958 – Princess Margaret, the Queen and the Queen Mother at the Derby, Epsom Downs Racecourse, Surrey. Picture: Fox Photos/Hulton Archive/Getty Images

June 6, 1959 – The Queen and Prince Philip walking near the George IV gateway at Windsor Castle. Picture: Fox Photos/Getty Images

March 22, 1960 – One of the first pictures of the newborn Prince Andrew in the Queen’s arms, in Buckingham Palace. The name of the prince, born February 19, 1960, was still unknown as the picture was taken. Picture: Central Press / AFP)

1962 – Rod Laver is presented with the Wimbledon trophy by the Queen. Picture: Fox Photos

February 23, 1963 – Royal tour, the Queen in Melbourne at a state reception.

June 13, 1964 – The Queen with Prince Edward. Picture: Central Press Photo Ltd / AFP)

1965 – The Queen with Prince Philip riding to Ascot racecourse.

October 6, 1967 – The Queen with her dog Wren at the open stake retriever trials at Balmoral. Picture: Central Press/Getty Images

April 28, 1968 – The Duke of Edinburgh with the Queen and Prince Andrew during the Windsor horse trials, annual international horse show. Picture: Stringer / Central Press / AFP

June 16, 1961 – The Queen leads members of her house party across the road to enter Ascot racecourse, when Her Majesty and members of her party took part in an impromptu race. Picture: Central Press / AFP

May 20, 1966 – Prince Philip and the Queen at the Newbury race meeting in Berkshire, UK. Picture: Terry Disney/Express/Hulton Archive/Getty Images

June 1969 – The Queen with Prince Charles at Windsor Castle. Picture: Fox Photos/Hulton Archive/Getty Images

April 1, 1970 – The Queen chats with jockeys Ron Quinton and Hilton Cope before the Queen Elizabeth Stakes at Randwick racecourse near Sydney, during her tour of Australia. Picture: Keystone/Hulton Archive/Getty Images

December 1971 – The Queen at Buckingham Palace during the recording of her Christmas message to the Commonwealth. Picture: Central Press Photos / AFP

September 1972 – The Queen and Prince Philip visit a farm on the Balmoral estate in Scotland, during their silver wedding anniversary year. Picture: Fox Photos/Hulton Archive/Getty Images

1973 – The Queen is greeted by the crowd on arrival at Sydney Airport in 1973, on a tour to open the Opera House. Picture: News Ltd

1974 – The Queen and Prince Philip, Duke of Edinburgh relax with their corgis at Balmoral Castle in 1974. Picture: Anwar Hussein/Getty Images

1975 – The Queen with a group of local children during her state visit to Mexico. Picture: Serge Lemoine/Getty Images

July 23, 1976 – The Queen walks with Prince Edward to watch Princess Anne compete in the equestrian event at the 1976 Olympics in Montreal, Canada. Picture: Anwar Hussein/Getty Images

March 1977 – Australian prime minister Malcolm Fraser with the Queen at a reception at Parliament House, Canberra during her visit to Australia.

June 8, 1978 – The Queen at the Epsom Derby. Picture: Daily Mirror/Mirrorpix/Mirrorpix via Getty Images

November 29, 1979 – The Queen and Duke of Edinburgh on their 32nd wedding anniversary with their sons, Princes Edward, Charles and Andrew at Balmoral Castle, Scotland. Picture: AFP

1980 – The Queen and the Duke of Edinburgh meet Australian entertainers who performed in a royal charity concert at the Sydney Opera House, from left): pianist Roger Woodward, comedian Paul Hogan and singer Olivia Newton-John. Picture: Commonwealth of Australia Picture: National Archives of Australia

March 7, 1981 – Prince Charles and his fiancee Lady Diana Spencer with the Queen. Picture: Fox Photos/Hulton Archive/Getty Images

October 7, 1982 – The Queen during a walkabout through tthe Queen Street Mall in Brisbane. Picture: David Levenson/Getty Images

February 18, 1983 – The Queen on a coach to tour the Sicarsta Steel Works in Acapulco, Mexico. Picture: David Levenson/Getty Images

June 10, 1984 – The Queen with world leaders West German chancellor Helmut Kohl, US president Ronald Reagan and British prime minister Margaret Thatcher at Buckingham Palace.

December 11, 1985 – Former British prime ministers (left to right) James Callaghan, Sir Alec Douglas-Home, Harold MacMillan and Harold Wilson with the Queen and then prime minister Margaret Thatcher at 10 Downing Street, to celebrate the building's 250 years. Picture: Hulton Archive/Getty Images

March 9, 1986 – The Queen reviews a guard of honour after arriving at the Fairbairn airbase in Canberra. Picture: AFP photo Patrick Riviere

August 4, 1987 – Diana, Princess of Wales with the Queen.

April 21, 1988 – The Queen smiles in the garden of the Government House in Perth as thousands of people sang and wished her a happy 62nd birthday. Picture: Patrick Riviere / AFP

June 17, 1989 – The Queen with Princess Margaret, Prince Harry, Princess Alexandra, Diana, Princess of Wales, Prince William, Prince Charles, Prince Philip, Prince Andrew, Sarah, Duchess of York and the Queen Mother, on the balcony of Buckingham Palace at the Trooping the Colour in London. Picture: David Levenson/Getty Images

February 1, 1990 – The Queen lunches at the cafeteria during the Commonwealth Games in Auckland with Paul Kingsman (NZ. Swimmer), Madhumite Bisht (Badminton, /India), Liz McColgan (swimming, /Scotland). Opposite the Queen is Hayley Lewis, 15, from /Australia and Robert Richards (Badminton /Jamaica).

May 14, 1991 – US first lady Barbara Bush and president George Bush talk to the Queen at the White House for a state dinner. Picture: AFP Photo J. David Ake

February 1992 – The Queen in Sydney during her Australian visit.

October 21, 1993 – The Queen on a walkabout with local diginitaries during a visit to Cyprus for the 13th Commonwealth Heads of Government Meeting. Picture: Tim Graham/Getty Images

October 18, 1994 – Russian President Boris Yeltsin invites the Queen to a banquet room after they greeted guests in Moscow's Kremlin.

1995 – The Queen wears Maori Kiwi feather cloak while inspecting recently refurbished Maori affairs select committee rooms in Parliament buildings in Wellington – with speaker Sir Peter Tapsell and NZ prime minister Jim (James) Bolger.

June 24, 1996 – Kerry Packer with Queen receiving Alfred Dunhill award after a polo match in Berkshire.

September 5, 1997 – The Queen meets wellwishers on the eve of Diana, Princess of Wales's funeral at St James’s Palace in London. Picture: Joel Robine / AFP

May 18, 1998 – The Queen with one of her pet corgis.

November 29, 1999 – The Queen wearing Karl Rehse designed dress at the Royal Variety Performance in Birmingham.

December 21, 2000 – The Queen making her traditional Christmas Day broadcast to the Commonwealth from Buckingham Palace. Picture: Fiona Hanson / Pool WPA / AFP

February 28, 2002 – The Queen samples a wine while visiting Chateau Barossa on the final leg of her golden jubilee tour, and she opened the Commonwealth Heads of Government Meeting (CHOGM) in Coolum. Picture: Russell Millard / News Limited pool / AFP

December 8, 2003 – The Queen at Combermere Barracks in Windsor where she recorded her Christmas Day message to the Commonwealth. Picture: Fiona Hanson / POOL / AFP

December 14, 2004 – The Queen records her Christmas Day message in the Yellow Drawing Room at Buckingham Palace. Picture: Fiona Hanson / Pool / AFP)

May 25, 2005 – The Queen during tour of Sir Winston Churchill Square during royal visit in Edmonton, Alberta, Canada.

March 13, 2006 – The Queen receives flowers from waiting schoolchildren waving national flags after the Commonwealth Day Service in Sydney. She began her 15th visit to Australia at Sydney’s harbour, which she described as rich in memories and symbolism. Picture: AFP photo/Rob Griffith/Pool

May 3, 2007 – The Queen visits a schoolchildren in Virginia’s State Capitol building, in Richmond, Virginia, US. She became the oldest British monarch that month, overtaking her great-great grandmother Queen Victoria. Picture: Matthew Cavanaugh / POOL / AFP

April 7, 2008 – The Queen meets Australian prime minister Kevin Rudd at Windsor Castle. Rudd said that he was a republican before the meeting with the Queen but he wasn't in a rush to call a republic referendum.

February 24, 2009 – The Queen unveils a memorial to Queen Elizabeth The Queen Mother on the Mall, in central Londo. Prince Charles paid a heartfelt tribute to his "darling grandmother". Standing at the foot of the statue of her husband king George VI, and smiling in the direction of Buckingham Palace, the statue of the last empress of India is surrounded by friezes of moments from her 101 years. Picture: AFP /Kirsty Wigglesworth/WPA POOL

July 6, 2010 – During a visit to New York, the Queen speaks to victims’ families after dedicating a wreath at the site of the 9/11 World Trade Center attack in 2001. Picture: AFP Photo / Pool / Lucas Jackson

November 7, 2010 – The Queen arrives at television studios in Belfast, Northern Ireland. She launched an official Facebook page.

April 1, 2011 – The Queen holds on to her hat in high winds as she arrives for a visit to RAF Valley in Anglesey, Wales. She and Prince Philip were given a personal tour of an RAF search and rescue helicopter by Prince William. Picture: Christopher Furlong / POOL / AFP

September 1, 2012 – The Queen and Charles, Prince of Wales laugh while watching the children’s sack race at the 2012 Braemar Highland Gathering in Braemar, Scotland. Picture: Indigo/Getty Images

May 11, 2013 –The Queen in the grounds at Windsor Castle during the Royal Windsor Horse Show. Picture: Mark Cuthbert/UK Press via Getty Images

July 24, 2014 – The Queen visits the Glasgow National Hockey Centre for day 1 of 20th Commonwealth Games in Glasgow, Scotland. Picture: Chris Jackson WPA Pool/Getty Images

May 15, 2015 – The Queen watches her horse Balmoral Fashion compete in the Fell Class on day 3 of the Royal Windsor Horse Show in Windsor. Picture: Max Mumby/Indigo/Getty Images

June 14, 2016 – The Queen arrives in the parade ring at Royal Ascot. Picture: Chris Jackson/Getty Images

October 19, 2017 – The Queenreviews the King’s Troop Royal Horse Artillery (KTRHA) during their 70th anniversary parade in Hyde Park. The troop was formed by King George VI, the Queen’s father, in October 1947 and they are commonly known as the Gunners. Picture: Max Mumby/Indigo/Getty Images

May 19, 2018 – The Queen looks on during the wedding ceremony of Britain's Prince Harry, Duke of Sussex and US actress Meghan Markle in St George's Chapel, Windsor CastlePicture: Jonathan Brady / Pool / AFP

November 10, 2018 – The Queen attends the annual Royal British Legion Festival of Remembrance at the Royal Albert Hall in London – 100 years since the end of World War I. Picture: Chris Jackson / Pool / AFP

May 29, 2019 – The Queen at the Royal Garden Party at Buckingham Palace. Picture: Yui Mok, WPA Pool/Getty Images

June 28, 2021 – The Queen attends the ceremony of the keys at the Palace of Holyroodhouse in Edinburgh. She will take medical advice and rest after spending a night in hospital to undergo tests. Picture: Chris Jackson / Pool / AFP

May 31, 2021 – The Queen rides Balmoral Fern, a 14-year-old Fell Pony, in Windsor Home Park, where she was in residence during the coronavirus pandemic. Picture: Steve Parsons - WPA Pool/Getty Images

April 20, 2022 – A new portrait of Queen Elizabeth II released by the Royal Windsor Horse Show to mark her 96th birthday. The Queen holds her Fell ponies, Bybeck Nightingale (right) and Bybeck Katie. Picgture: henrydallalphotography.com via Getty Images