Horse Racing - Cheltenham Festival - Cheltenham Racecourse, Cheltenham, Britain - March 14, 2023 Britain's Princess Anne, the Princess Royal with her daughter Zara Tindall are pictured at the Cheltenham Festival REUTERS/Paul Childs 

Britain's Anne, Princess Royal, attends the annual Commonwealth Day Reception at Buckingham Palace in London, Britain March 13, 2023. Daniel Leal/Pool via REUTERS 

Britain's Anne, Princess Royal, departs following the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Britain's Anne, Princess Royal, departs following the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh, and Anne, Princess Royal attend the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh, Princess Anne, the Princess Royal and her husband Vice Admiral, Timothy Laurence, watch dancers perform, as they attend the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh, Anne, Princess Royal and Vice Admiral Sir Tim Laurence attend the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh, Princess Anne, the Princess Royal and her husband Vice Admiral, Timothy Laurence, watch dancers perform, as they attend the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Britain's Prince Edward, Duke of Edinburgh and Princess Anne, the Princess Royal attend the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Britain's Princess Anne, the Princess Royal and her husband Vice Admiral, Timothy Laurence attend the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Britain's Princess Anne, the Princess Royal attends the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh,Princess Anne and her husband Vice Admiral, Timothy Laurence watch dancers perform, as they attend the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh, Anne, Princess Royal and Vice Admiral Sir Tim Laurence attend the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh, Anne, Princess Royal and Vice Admiral Sir Tim Laurence attend the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh, Anne, Princess Royal and Vice Admiral Sir Tim Laurence attend the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Britain's Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh,Princess Anne and her husband Vice Admiral, Timothy Laurence attend the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh,Princess Anne and her husband Vice Admiral, Timothy Laurence attend the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Anne, Princess Royal, attends the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Anne, Princess Royal, attends the annual Commonwealth Day Service at Westminster Abbey in London, Britain. Picture date: Monday March 13, 2023. Jordan Pettitt/Pool via REUTERS 

Britain's King Charles, Camilla, Queen Consort, Prince William, Prince of Wales, Catherine, Princess of Wales, Prince Edward, Duke of Edinburgh, Sophie, Duchess of Edinburgh and Anne, Princess Royal attend the Commonwealth Day service held at Westminster Abbey in London, Britain, March 13, 2023. REUTERS/Hannah McKay/Pool 

Rugby Union - Six Nations Championship - Scotland v Ireland - Murrayfield Stadium, Edinburgh, Scotland, Britain - March 12, 2023 Britain's Princess Anne, the Princess Royal presents the Quaich to Ireland's Johnny Sexton after the match Action Images via Reuters/Lee Smith 

Rugby Union - Six Nations Championship - Scotland v Ireland - Murrayfield Stadium, Edinburgh, Scotland, Britain - March 12, 2023 Britain's Princess Anne, the Princess Royal presents the Quaich to Ireland's Johnny Sexton after the match Action Images via Reuters/Lee Smith 

Rugby Union - Six Nations Championship - France v Scotland - Stade de France, Saint-Denis, France - February 26, 2023 Britain's Princess Anne, the Princess Royal is pictured in the stands before the match REUTERS/Christian Hartmann 

Rugby Union - Six Nations Championship - Scotland v Wales - Murrayfield Stadium, Edinburgh, Scotland, Britain - February 11, 2023 Britain's Princess Anne, the Princess Royal is seen as Scotland's Jamie Ritchie shakes hands with former player Rob Wainwright before the match Action Images via Reuters/Lee Smith 

Rugby Union - Six Nations Championship - Scotland v Wales - Murrayfield Stadium, Edinburgh, Scotland, Britain - February 11, 2023 Britain's Princess Anne, the Princess Royal is pictured on the pitch before the match REUTERS/Russell Cheyne 

Rugby Union - Six Nations Championship - Scotland v Wales - Murrayfield Stadium, Edinburgh, Scotland, Britain - February 11, 2023 Britain's Princess Anne, the Princess Royal with Scotland players before the match Action Images via Reuters/Lee Smith 

Rugby Union - Six Nations Championship - Scotland v Wales - Murrayfield Stadium, Edinburgh, Scotland, Britain - February 11, 2023 Britain's Princess Anne, the Princess Royal shakes hands with Scotland players before the match Action Images via Reuters/Lee Smith 

Rugby Union - Six Nations Championship - England v Scotland - Twickenham Stadium, London, Britain - February 4, 2023 Britain's Princess Anne, the Princess Royal is pictured alongside the Calcutta cup inside the stadium after the match Action Images via Reuters/Andrew Couldridge 

Greece's former Queen Anne-Marie and former Crown Princess Marie-Chantal walk on the day of the funeral of former King of Greece Constantine II, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Greece's former Crown Prince Pavlos, former Queen Anne-Marie, former Crown Princess Marie-Chantal, former Prince Nikolaos, former Princess Tatiana, former Princess Alexia, her husband Carlos Morales Quintana, former Prince Philippos and former Princess Nina attend the funeral of former King of Greece Constantine II, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Greece's former Crown Prince Pavlos, former Crown Princess Marie-Chantal and former Queen Anne-Marie follow the coffin of former King of Greece Constantine II on the day of his funeral, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Greece's former Crown Prince Pavlos, former Crown Princess Marie-Chantal and former Queen Anne-Marie follow the coffin of former King of Greece Constantine II on the day of his funeral, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Britain's Princess Anne, the Princess Royal and her husband Vice Admiral Sir Timothy Laurence walk on the day of the funeral of former King of Greece Constantine II, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Britain's Princess Anne, the Princess Royal and her husband Vice Admiral Sir Timothy Laurence walk on the day of the funeral of former King of Greece Constantine II, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Greece's former Crown Prince Pavlos greets Britain's Princess Anne, the Princess Royal and her husband Vice Admiral Sir Timothy Laurence on the day of the funeral of former King of Greece Constantine II, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Britain's Princess Anne, the Princess Royal and her husband Vice Admiral Sir Timothy Laurence walk on the day of the funeral of former King of Greece Constantine II, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Greece's former Crown Prince Pavlos greets Britain's Princess Anne, the Princess Royal and her husband Vice Admiral Sir Timothy Laurence on the day of the funeral of former King of Greece Constantine II, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Britain's Princess Anne, the Princess Royal and her husband Vice Admiral Sir Timothy Laurence walk on the day of the funeral of former King of Greece Constantine II, in Athens, Greece, January 16, 2023. REUTERS/Louiza Vradi 

Greece's former Queen Anne Marie, former Crown Prince Pavlos and Princess Marie-Chantal attend the funeral service of former King of Greece Constantine II in the Metropolitan Cathedral of Athens, Greece, January 16, 2023. REUTERS/Stoyan Nenov/Pool 

Greece's former Queen Anne Marie, former Crown Prince Pavlos and Princess Marie-Chantal attend the funeral service of former King of Greece Constantine II in the Metropolitan Cathedral of Athens, Greece, January 16, 2023. REUTERS/Stoyan Nenov/Pool 

Greece's former Queen Anne Marie, former Crown Prince Pavlos and Princess Marie-Chantal, former Spanish King Juan Carlos and Queen Sofia attend the funeral service of former King of Greece Constantine II in the Metropolitan Cathedral of Athens, Greece, January 16, 2023. REUTERS/Stoyan Nenov/Pool 

Greece's former Queen Anne Marie, former Crown Prince Pavlos and Princess Marie-Chantal, former Spanish King Juan Carlos and Queen Sofia attend the funeral service of former King of Greece Constantine II in the Metropolitan Cathedral of Athens, Greece, January 16, 2023. REUTERS/Stoyan Nenov/Pool 

Britain's Princess Anne, the Princess Royal attends the funeral service of former King of Greece Constantine II in the Metropolitan Cathedral of Athens, Greece, January 16, 2023. REUTERS/Stoyan Nenov/Pool 

Britain's Prince William and Catherine, Princess of Wales meet health care assistant Anne O'Hara in the intensive care ward during a visit to the new Royal Liverpool University Hospital, Merseyside, meeting staff and mental health first aiders and viewing the hospital facilities, in Liverpool, Britain January 12, 2023. Bruce Adams/Pool via REUTERS REFILE - CORRECTING YEAR 

Cyprus' Foreign Affairs Minister Ioannis Kasoulides welcomes Britain's Princess Anne, the Princess Royal at the Presidential Palace, in Nicosia, Cyprus January 11, 2023. REUTERS/Yiannis Kourtoglou 

Cyprus' President Nicos Anastasiades shakes hands with Britain's Princess Anne, the Princess Royal, on the day of a meeting at the Presidential Palace, in Nicosia, Cyprus January 11, 2023. REUTERS/Yiannis Kourtoglou 

Cyprus' President Nicos Anastasiades walks with Britain's Princess Anne, the Princess Royal, on the day of a meeting at the Presidential Palace, in Nicosia, Cyprus January 11, 2023. REUTERS/Yiannis Kourtoglou 

Cyprus' President Nicos Anastasiades speaks with Britain's Princess Anne, the Princess Royal, on the day of a meeting at the Presidential Palace, in Nicosia Cyprus January 11, 2023. REUTERS/Yiannis Kourtoglou 

Britain's Princess Anne, the Princess Royal looks on, after a meeting with Cyprus President Nicos Anastasiades at the Presidential Palace, in Nicosia, Cyprus January 11, 2023. REUTERS/Yiannis Kourtoglou 

Britain's Princess Anne, the Princess Royal looks on, after a meeting with Cyprus President Nicos Anastasiades at the Presidential Palace, in Nicosia, Cyprus January 11, 2023. REUTERS/Yiannis Kourtoglou 

Britain's Prince Edward, Earl of Wessex, Britain's King Charles III, Britain's Prince William, Prince of Wales and Britain's Princess Anne, Princess Royal attend the Remembrance Sunday ceremony at the Cenotaph on Whitehall in central London, Britain November 13, 2022. Isabel Infantes/Pool via REUTERS 

Britain's Prince Edward, Earl of Wessex, Britain's King Charles III, Britain's Prince William, Prince of Wales and Britain's Princess Anne, Princess Royal attend the Remembrance Sunday ceremony at the Cenotaph on Whitehall in central London, Britain November 13, 2022. Isabel Infantes/Pool via REUTERS 

Britain's Prince William, Catherine, Princess of Wales, and Britain's Princess Anne attend the annual Festival of Remembrance at the Royal Albert Hall in London, Britain November 12, 2022. REUTERS/Chris Radburn/Pool 

Britain's Prince William, Britain's Princess Anne and her husband Vice Admiral, Sir Timothy Laurence attend the annual Festival of Remembrance at the Royal Albert Hall in London, Britain November 12, 2022. REUTERS/Chris Radburn/Pool 

Britain's Princess Anne and her husband Vice Admiral Sir Timothy Laurence attend the annual Festival of Remembrance at the Royal Albert Hall in London, Britain November 12, 2022. REUTERS/Chris Radburn/Pool 

Anne, Princess Royal meets Royal Navy personnel at Portsmouth Naval Base who took part in Britain's Queen Elizabeth funeral procession, in Portsmouth, Britain, September 22, 2022. Andrew Matthews/Pool via REUTERS 

Anne, Princess Royal meets Royal Navy personnel at Portsmouth Naval Base who took part in Britain's Queen Elizabeth funeral procession, in Portsmouth, Britain, September 22, 2022. Andrew Matthews/Pool via REUTERS 

Anne, Princess Royal meets Royal Navy personnel at Portsmouth Naval Base who took part in Britain's Queen Elizabeth funeral procession, in Portsmouth, Britain, September 22, 2022. Andrew Matthews/Pool via REUTERS 

WINDSOR, ENGLAND - SEPTEMBER 19: King Charles III and Anne, Princess Royal arrive at St. George's Chapel for the Committal Service for Queen Elizabeth II on September 19, 2022 in Windsor, England. The committal service at St George's Chapel, Windsor Castle, took place following the state funeral at Westminster Abbey. A private burial in The King George VI Memorial Chapel followed. Queen Elizabeth II died at Balmoral Castle in Scotland on September 8, 2022, and is succeeded by her eldest son, King Charles III. Jeff J Mitchell/Pool via REUTERS 

Prince William, King Charles III, Princess Anne, Prince Harry, Prince Andrew and Prince Edward follow the hearse carrying the coffin of Queen Elizabeth II towards Saint George's chapel for her funeral at Windsor castle, Britain, Monday, Sept. 19, 2022. The Queen, who died aged 96 on Sept. 8, will be buried at Windsor alongside her late husband, Prince Philip, who died last year. Kirsty Wigglesworth/Pool via REUTERS