Britain’s Queen Elizabeth, Britain’s Prince Charles, Britain’s Camilla, Britain’s Prince William, Catherine, Duchess of Cambridge and Prince George leave the St Mary Magdalene's church after the Royal Family's Christmas Day service on the Sandringham estate in eastern England, Britain, December 25, 2019. REUTERS/Phil Noble

Britain’s Queen Elizabeth, Britain’s Camilla, Britain’s Prince William, Catherine, Duchess of Cambridge and Prince George leave the St Mary Magdalene's church after the Royal Family's Christmas Day service on the Sandringham estate in eastern England, Britain, December 25, 2019. REUTERS/Phil Noble

Britain’s Queen Elizabeth, Britain’s Camilla, Catherine, Duchess of Cambridge and Princess Charlotte leave the St Mary Magdalene's church after the Royal Family's Christmas Day service on the Sandringham estate in eastern England, Britain, December 25, 2019. REUTERS/Phil Noble

Britain’s Queen Elizabeth, Catherine, Duchess of Cambridge and Princess Charlotte leave the St Mary Magdalene's church after the Royal Family's Christmas Day service on the Sandringham estate in eastern England, Britain, December 25, 2019. REUTERS/Phil Noble

Britain’s Queen Elizabeth, Britain’s Camilla, Duchess of Cornwall, Catherine, Duchess of Cambridge and Princess Charlotte leave the St Mary Magdalene's church after the Royal Family's Christmas Day service on the Sandringham estate in eastern England, Britain, December 25, 2019. REUTERS/Phil Noble

Britain’s Queen Elizabeth, Britain’s Prince William, Catherine, Duchess of Cambridge and Prince George leave the St Mary Magdalene's church after the Royal Family's Christmas Day service on the Sandringham estate in eastern England, Britain, December 25, 2019. REUTERS/Phil Noble

Britain's Queen Elizabeth, Prince Charles and Catherine, Duchess of Cambridge leave St Mary Magdalene's church after the Royal Family's Christmas Day service on the Sandringham estate in eastern England, Britain, December 25, 2018. REUTERS/Hannah McKay

Queen Elizabeth II arrives at the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England. Prince Henry Charles Albert David of Wales marries Ms. Meghan Markle in a service at St George's Chapel inside the grounds of Windsor Castle. Among the guests were 2200 members of the public, the royal family and Ms. Markle's Mother Doria Ragland. Chris Jackson/Pool via REUTERS

Queen Elizabeth II arrives at the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England. Prince Henry Charles Albert David of Wales marries Ms. Meghan Markle in a service at St George's Chapel inside the grounds of Windsor Castle. Among the guests were 2200 members of the public, the royal family and Ms. Markle's Mother Doria Ragland. Chris Jackson/Pool via REUTERS

Royal superfan Donna Werner looks over some of the photos and memorabilia she has collected traveling to England for the weddings of Prince Andrew, Prince William and Queen Elizabeth's 90th birthday celebration, at her home in New Fairfield, Connecticut, U.S. March 20, 2018. Picture taken March 20, 2018. REUTERS/Michelle McLoughlin

Photos and royal family memorabilia collected by royal superfan Donna Werner while traveling to England for the weddings of Prince Andrew, Prince William and Queen Elizabeth's 90th birthday celebration, are seen at her home in New Fairfield, Connecticut, U.S. March 20, 2018. Picture taken March 20, 2018. REUTERS/Michelle McLoughlin

Royal superfan Donna Werner looks over some of the photos and memorabilia she has collected traveling to England for the weddings of Prince Andrew, Prince William and Queen Elizabeth's 90th birthday celebration, at her home in New Fairfield, Connecticut, U.S. March 20, 2018. Picture taken March 20, 2018. REUTERS/Michelle McLoughlin

Royal family memorabilia collected by royal superfan Donna Werner while traveling to England for the weddings of Prince Andrew, Prince William and Queen Elizabeth's 90th birthday celebration, is seen at her home in New Fairfield, Connecticut, U.S. March 20, 2018. Picture taken March 20, 2018. REUTERS/Michelle McLoughlin

Royal superfan Donna Werner poses with some of the photos and memorabilia she has collected traveling to England for the weddings of Prince Andrew, Prince William and Queen Elizabeth's 90th birthday celebration, at her home in New Fairfield, Connecticut, U.S. March 20, 2018. Picture taken March 20, 2018. REUTERS/Michelle McLoughlin

Royal family memorabilia collected by royal superfan Donna Werner while traveling to England for the weddings of Prince Andrew, Prince William and Queen Elizabeth's 90th birthday celebration, at her home in New Fairfield, Connecticut, U.S. March 20, 2018. Picture taken March 20, 2018. REUTERS/Michelle McLoughlin

Royal superfan Donna Werner looks over some of the photos and memorabilia she has collected traveling to England for the weddings of Prince Andrew, Prince William and Queen Elizabeth's 90th birthday celebration, at her home in New Fairfield, Connecticut, U.S. March 20, 2018. Picture taken March 20, 2018. REUTERS/Michelle McLoughlin

Royal superfan Donna Werner poses with some of the photos and memorabilia she has collected traveling to England for the weddings of Prince Andrew, Prince William and Queen Elizabeth's 90th birthday celebration, at her home in New Fairfield, Connecticut, U.S. March 20, 2018. Picture taken March 20, 2018. REUTERS/Michelle McLoughlin

Cricket - Ashes test match - Australia v England - GABBA Ground, Brisbane, Australia, November 23, 2017. A member of the crowd dressed as Britain's Queen Elizabeth II reacts during the first day of the first Ashes cricket test match. REUTERS/David Gray

Britain's Queen Elizabeth views an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Arthur Edwards/Pool

Britain's Queen Elizabeth views an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Arthur Edwards/Pool

Britain's Queen Elizabeth views an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Arthur Edwards/Pool

Britain's Queen Elizabeth is greeted as she arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Arthur Edwards/Pool

Britain's Queen Elizabeth looks towards a man dressed in traditional costume as she arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Arthur Edwards/Pool

Britain's Queen Elizabeth looks towards a man dressed in traditional costume as she arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Toby Melville TPX IMAGES OF THE DAY

Britain's Queen Elizabeth walks past a man dressed in traditional costume as she arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Toby Melville

Britain's Queen Elizabeth looks towards a man dressed in traditional costume as she arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Toby Melville

Britain's Queen Elizabeth looks towards a man dressed in traditional costume as she arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Toby Melville

Britain's Queen Elizabeth looks towards a man dressed in traditional costume as she arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Toby Melville

Britain's Queen Elizabeth arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Toby Melville

Britain's Queen Elizabeth arrives to view an exhibition on Fiji at the Sainsbury Centre for Visual Arts, University of East Anglia in Norwich, eastern England, January 27, 2017. REUTERS/Toby Melville

The Duchess of Cornwall, the Prince of Wales, Queen Elizabeth II, the Duke of Edinburgh, and Duke and Duchess of Cambridge (L-R) arrive for the annual evening reception for members of the Diplomatic Corps at Buckingham Palace in London, Britain December 8, 2016. Picture taken December 8, 2016. REUTERS/Dominic Lipinski/Pool

ritain's Queen Elizabeth greets the First Minister of Wales Carwyn Jones during a private audience at Buckingham Palace in London, Britain December 8, 2016. REUTERS/Yui Mok/Pool

ritain's Queen Elizabeth greets the First Minister of Wales Carwyn Jones during a private audience at Buckingham Palace in London, Britain December 8, 2016. REUTERS/Yui Mok/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II departs from Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II unveils a plaque after meeting members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II arrives at Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool TPX IMAGES OF THE DAY

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II meets members of Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, Britain December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II arrives at Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, England, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II arrives at Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, England, December 1, 2016. REUTERS/Stuart C. Wilson/Pool

Queen Elizabeth II visits Goodenough College, the leading residential community for British and international postgraduate students studying in London, during a visit in London, England, December 1, 2016. REUTERS/Stuart C. Wilson/Pool