Britain's Queen Elizabeth II, right, and Catherine, Duchess of Cambridge watch a fashion show at De Montfort University in Leicester, England, Thursday March 8, 2012. (AP Photo/Oli Scarff, Pool, File)
Britain's Prince William and Kate, Duchess of Cambridge and their newborn baby princess, pose for the media as they leave St. Mary's Hospital's exclusive Lindo Wing, London, Saturday, May 2, 2015. (AP Photo/Kirsty Wigglesworth, File)
Britain's Duchess of Cambridge, right, and Camilla, Duchess of Cornwall, leave Buckingham Palace in a open horse drawn carriage on their way to the Horse Guards Parade for the Trooping the Colour ceremony to mark the official birthday of the Queen, in London, Saturday, June 11, 2011. (AP Photo/Akira Suemori, File)
Britain's Catherine, Duchess of Cambridge, right, walks with the bridesmaids and pageboys as they arrive for her sister Pippa Middleton's wedding to James Matthews, at St Mark's Church in Englefield, England, Saturday, May 20, 2017. (Justin Tallis/Pool Photo via AP, File)
Britain's Prince William and Kate, Duchess of Cambridge hold the Prince of Cambridge, Tuesday July 23, 2013, as they pose for photographers outside St. Mary's Hospital exclusive Lindo Wing in London where the Duchess gave birth on Monday July 22. (AP Photo/Lefteris Pitarakis, File)
Prince William, right, and wife Kate, Duke and Duchess of Cambridge, watch track cycling at the velodrome during the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Matt Rourke, File)
Queen Elizabeth II, Prince Louis, Kate, Duchess of Cambridge, Princess Charlotte, Prince George and Prince William gather on the balcony of Buckingham Palace, London, Thursday, June 2, 2022 as they watch a flypast of Royal Air Force aircraft pass over. (Paul Grover, Pool Photo via AP, File)
Britain's Kate, the Duchess of Cambridge sits on a log with children at the Sayers Croft Forest School and Wildlife Garden, in London, Tuesday Oct. 2, 2018. (Peter Nicholls/Pool Photo via AP, File)
Britain's Prince Charles and Camilla, Duchess of Cornwall watch as Britain's Prince William kisses his wife Kate, Duchess of Cambridge on the balcony of Buckingham Palace after the Royal Wedding in London Friday, April, 29, 2011. (AP Photo/Matt Dunham, File)
Britain's Prince William, second left, Kate, Princess of Wales, left, Britain's Prince Harry, second right, and Meghan, Duchess of Sussex view the floral tributes for the late Queen Elizabeth II outside Windsor Castle, in Windsor, England on Sept. 10, 2022. (AP Photo/Martin Meissner, File)
Britain's Kate, Duchess of Cambridge and Prince George are seen in the royal box before the final of the men's singles on day fourteen of the Wimbledon tennis championships in London, Sunday, July 10, 2022. (AP Photo/Kirsty Wigglesworth, File)
Britain's Prince Charles, left, speaks with Kate, the Duchess of Cambridge as they arrive for the World premiere of the new film from the James Bond franchise 'No Time To Die', in London on Sept. 28, 2021. (Chris Jackson/Pool Photo via AP, File)
Britain's Prince William, center, with his then gilrfriend Kate Middleton and Prince Harry watch the England against Italy Six Nations rugby match at Twickenham stadium in London, Saturday Feb. 10, 2007. (AP Photo/Alastair Grant, File)
Kate, Princess of Wales, centre, waves from the balcony of Buckingham Palace with Prince William, right, Princess Charlotte, down left, and Prince Louis, down centre, during the coronation of Britain's King Charles III, in London, Saturday, May 6, 2023. (Leon Neal/Pool Photo via AP, File)
This grab taken from a video released by the BBC Studios on Friday March 22, 2024, shows Britain's Kate, the Princess of Wales recording her message announcing that following her abdominal surgery in January "tests after the operation found cancer had been present." Kate, said Friday she has cancer and is undergoing chemotherapy. (BBC Studios via AP)
Britain's Prince William and his wife Kate, the Duke and Duchess of Cambridge, smile as they watch a shark ceremony as they arrive at Marapa Island, Solomon Islands, Monday, Sept. 17, 2012. (AP Photo/Rick Rycroft, Pool, File)
Britain's Kate, Princess of Wales, attends the Remembrance Sunday service at the Cenotaph on Whitehall in London, Sunday, Nov. 12, 2023. (AP Photo/Kin Cheung, Pool, File)
Britain's Kate, Duchess of Cambridge stands on centre court during the trophy presentation after Serbia's Novak Djokovic defeated Switzerland's Roger Federer during the men's singles final match of the Wimbledon Tennis Championships in London, Sunday, July 14, 2019. (Laurence Griffiths/Pool Photo via AP, File)
Britain's Prince William and Britain's Kate, Princess of Wales visit The Street, a community hub that hosts local organisations to grow and develop their services, in Scarborough, North Yorkshire, Thursday Nov. 3, 2022. (Charlotte Graham/Pool via AP, File)
Kate Middleton arrives at Westminster Abbey at the Royal Wedding in London Friday, April 29, 2011. (AP Photo/Gero Breloer, File)
Britain's Kate, the Duchess of Cambridge reacts during a visit to Battersea Park, as she met up with mothers, in London, Tuesday, Sept. 22, 2020. (Jack Hill/Pool Photo via AP, File)
Prince Louis leans on Kate, Duchess of Cambridge, during the Platinum Jubilee Pageant held outside Buckingham Palace, in London, Sunday June 5, 2022, on the last of four days of celebrations to mark the Platinum Jubilee. (Chris Jackson/Pool Photo via AP, File)
Britain's Kate, the Duchess of Cambridge, laughs, during a visit to St Thomas' Hospital with Prince William to promote mental health issuses, in London, Thursday March 10, 2016. (Toby Melville /Pool Photo via AP, File)
Britain's Prince William and Kate Duchess of Cambridge pass along The Mall as part of a four-day Diamond Jubilee celebration to mark the 60th anniversary of Queen Elizabeth's accession to the throne, London, Tuesday, June, 5, 2012. (AP Photo/Tom Hevezi, Pool, File)
Britain's Prince William and his wife Kate, Duchess of Cambridge stand outside of Westminster Abbey after their Royal Wedding in London Friday, April, 29, 2011. (AP Photo/Martin Meissner, File)
Britain's Prince William, right, and his wife Kate, left, the Duchess of Cambridge, wave to the crowd. Wednesday, April 23, 2014, in Adelaide, Australia. (AP Photo/David Mariuz, File)
Britain's Kate, Duchess of Cambridge, shelters from the rain as she arrives at Kensington Palace for a reception for parents of users of a Centre for Early Childhood, on the day of the launch of the Royal Foundation Centre for Early Childhood, in London, Friday, June 18, 2021. (Tolga Akmen/Pool Photo via AP, File)
Britain's Kate, Duchess of Cambridge watches Mate Pavic and Nikola Mektic of Croatia play Matthew Ebden and Max Purcell of Australia in the final of the men's doubles on day thirteen of the Wimbledon tennis championships in London, Saturday, July 9, 2022. (AP Photo/Kirsty Wigglesworth, File)
Britain's Duchess of Cambridge arrives to attend a service of commemoration to pay tribute to members of the British armed forces past and present who served on operations in Afghanistan, at St Paulís Cathedral, in central London, Friday, March 13, 2015. (AP Photo/Lefteris Pitarakis, File)
Britain's Kate, Duchess of Cambridge attends a reception for parents of users of a Centre for Early Childhood, on the day of the launch of the Royal Foundation Centre for Early Childhood at Kensington Palace in London, Friday, June 18, 2021. (Tolga Akmen/Pool Photo via AP, File)
Britain's Prince William, left, and Britain's Kate, Princess of Wales, attend a ceremonial welcome for the President and the First Lady of the Republic of Korea at Horse Guards Parade in London, England on Nov. 21, 2023. (Chris Jackson/Pool Photo via AP, File)
From left, Britain's Prince George, Prince Louis, Princess Charlotte, Kate, Duchess of Cambridge and Camilla, Duchess of Cornwall ride in a carriage during the Trooping the Color parade in London, Thursday June 2, 2022, on the first of four days of celebrations to mark the Platinum Jubilee. (Chris Jackson/Pool Photo via AP, File)
A person watches an announcement on a smart phone outside Buckingham Palace by the Princess of Wales, Friday, March 22, 2024. (Yui Mok/PA via AP)