Among those seen in this Trooping of the Colour photo from 1986 are Queen Elizabeth II and Prince Philip, as well as Prince Charles and Princess Diana with Prince William, right. (AP Photo)
Prince Harry sticks out his tongue for the cameras as Princess Diana holds Harry and a smiling Prince William sits in front on June 11, 1988. (Steve Holland/AP Photo)
Queen Elizabeth II, and Queen Elizabeth, the Queen Mother talk together on the balcony of Buckingham Palace in London Saturday June 15, 1996. (John Stillwell/AP Photo)
Prince Edward, Princess Michael of Kent, Sarah Philips, The Duke of Edinburgh, Queen Elizabeth II, The Queen Mother, The Duke of Kent, The Duchess of Kent, Prince Charles in 1997. (David Thomson/AP Photo)
Britain's Queen Elizabeth waves to spectators with the Queen Mother, left, and Princess Margaret, Prince Charles and the Princess Royal on June 17, 2000. (Christine Nesbitt/AP Photo)
Queen Elizabeth II waves to the crowd, accompanied by other members of the royal family, June 16, 2001, following the annual Trooping of the Colour ceremony. (Richard Lewis/AP Photo)
Princes Harry and William,The Princess Royal, Queen Elizabeth II, Prince Philip, the Countess and Earl of Wessex and Prince Charles wave to the crowd on June 14, 2003. (MARTYN HAYHOW/AFP/Getty Images)
Members of Britain's Royal Family are seen on the balcony of Buckingham Palace after attending the Trooping the Colour ceremony on June 12, 2004, in London, England. (Scott Barbour/Getty Images)
Camilla the Duchess of Cornwall attends Trooping the Colour for the first time and appears with Prince Charles, Prince of Wales and Prince William on June 11, 2005 in London. (Tim Graham Photo Library via Getty Images)
Countess of Wessex, Princess Beatrice, Prince Andrew, Princess Eugene, Queen Elizabeth II, the Duke of Edinburgh, Prince Harry, the Princess Royal, and Prince Charles in 2006. (Sang Tan/AP Photo)
Princess Beatrice, Princess Eugenie, Prince William, Queen Elizabeth II, Prince Philip, Princess Anne and Rear Admiral Tim Lawrence on June 16, 2007. (Alastair Grant/AP Photo)
Princess Eugenie, Prince William, Queen Elizabeth II, Prince Philip, Prince Charles in London, Saturday June 16, 2007. (Alastair Grant/AP Photo)
Queen Elizabeth II, right, accompanied by her grandsons, Prince William, left, and Prince Harry, center, June 13, 2009. (Lefteris Pitarakis/AP Photo)
Queen Elizabeth II gestures as she and her family watch a fly-by on the balcony of Buckingham Palace in London, June 12, 2010. (Sang Tan/AP Photo)
Duchess Kate, Prince William, Countess Sophie, Prince Edward, Lady Louise, Princess Anne, Tim Laurence, Queen Elizabeth II, Prince Harry, Prince Philip,and Prince Andrew, 2011. (Akira Suemori/AP Photo)
Queen Elizabeth II and Prince Philip, center, watch a Royal Air Force fly pass with their family from the balcony of Buckingham Palace in London, Saturday, June 16, 2012. (Sang Tan/AP Photo)
Queen Elizabeth II, surrounded by members of her family, watch a Royal Air Force flypast on Saturday, June 15, 2013. (Sang Tan/AP Photo)
Queen Elizabeth II surrounded by members of her family, stands on the balcony of Buckingham Palace to watch the Royal Air Force fly past on June 14, 2014. (Lefteris Pitarakis, file/AP Photo)
Prince William holds son Prince George, with Queen Elizabeth II, The Duchess of Cornwall, The Prince of Wales, Duchess Kate, Prince Harry and Prince Philip, June 13, 2015. (Tim Ireland/AP Photo)
Queen Elizabeth II waves as she watches the flypast with members of the royal family on Saturday, June 11, 2016. (Tim Ireland/AP Photo)
Queen Elizabeth II, Prince Philip, the Duke of Edinburgh, Kate, The Duchess of Cambridge, Prince William and their children Princess Charlotte and Prince George, June 17, 2017. (Kirsty Wigglesworth/AP Photo)
Queen Elizabeth II, Duchess Meghan, Prince Charles, Prince Harry, Kate Duchess of Cambridge and Prince William on Saturday, June 9, 2018. (Frank Augstein/AP Photo)
Princess Anne, Princess Beatrice, Prince Andrew, Queen Elizabeth, Meghan, Duchess of Sussex, Prince Charles, Prince Harry, Duchess Kate and Prince William on June 9, 2018. (Frank Augstein/AP Photo)