Britain's Queen Elizabeth leaves the annual Easter Sunday Service at St Georges Chapel in Windsor Castle, Britain. The Easter Mattins Service is attended every year by the Royal Family. This year the service falls on the Queen's Elizabeth II birthday, who turns 93. EPA
The President of the United Arab Emirates, Sheikh Khalifa bin Zayed Al Nahyan, arrives in Windsor for a State Visit to the United Kingdom as the guest of Her Majesty The Queen. His Higness arrived at Windsor Castle by carriage , inspected the Guard of Honour and then after a brief meeting with the Queen attended a Stat Lunch in the Waterloo Chamber of Windsor Castle in 2013. Photo by Ian Jones
Queen Elizabeth, Sheikh Khalifa, and Prince Philip leave following the inspection of the Guard of Honour at Windsor Castle in 2013. Toby Melville / AP Photo
Sheikh Khalifa is greeted by Queen Elizabeth II and Prince Philip, the Duke of Edinburgh on the Royal Dais outside Windsor Castle in 2013. Dan Kitwood / Getty Images
Sheikh Mohammed bin Zayed, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the Armed Forces, with Queen Elizabeth, Prince Philip and Prince Andrew at Sheikh Zayed Grand Mosque in 2010. Andrew Henderson / The National
Britain’s Queen Elizabeth attends a lunch at Al Mushrif Palace hosted by Sheikh Khalifa, President of the UAE, and members of the ruling family in 2013. Ian Jones
Queen Elizabeth II with the President of the United Arab Emirates, Sheikh Khalifa bin Zayed Al Nahyan,centre, and Prince Phillip on the Royal Dais in Windsor, as he begins a State Visit to the UK in 2013. AP Photo
Queen Elizabeth ll inaugurates the tower in 1979 as part of her tour of the UAE. Here she is appointing Ruler of Dubai, Sheikh Rashid, a Knight Grand Cross of the Order of Saint Michael and Saint George. The British honour is conferred on people holding positions of authority. Prince Philip stands to the back left. Tim Graham / Getty Images
A photograph of Queen Elizabeth with Sheikh Zayed, the UAE's Founding Father during a state visit to the country in 1979. Courtesy: Zaki Anwar Nusseibeh
Queen Elizabeth ll and Prince Philip, the Duke of Edinburgh with Sheikh Zayed, the UAE's Founding Father on board the Royal Yacht Britannia during a state visit to the UAE on February 25, 1979. Anwar Hussein/Getty Images
Queen Elizabeth II meets with Sheikh Zayed, the UAE's Founding Father during a state visit 40 years ago. Courtesy: Al Ittihad
Queen Elizabeth II meets Sheikh Mohammed at Emirates Palace on November 25, 2010 in Abu Dhabi during her state visit to the Middle East.. Chris Jackson / Getty Images
Britain's Queen Elizabeth leaves the annual Easter Sunday Service at St Georges Chapel in Windsor Castle, Britain, 21 April 2019. The Easter Mattins Service is attended every year by the Royal Family. This year the service falls on the Queen's Elizabeth II birthday, who turns 93. EPA
Catherine, Duchess of Sussex curtsies as Queen Elizabeth II arrives for the Easter Sunday service at St George's Chapel in Windsor, England. Getty Images
Members of the royal family greet Queen Elizabeth II as she arrives for the Easter Sunday service at St George's Chapel in Windsor, England. Getty Images
Zara (L) and Mike Tindall, Britain's Catherine, Duchess of Cambridge (C) and Britain's Prince William, Duke of Cambridge (2nd R) stand by as Britain's Queen Elizabeth II arrrives for the Easter Mattins Service at St. George's Chapel, Windsor Castle. Britain's Queen Elizabeth II celebrates her birthday on Sunday, marking 93 years in the public glare. AFP
Britain's Catherine, Duchess of Cambridge (L) smiles as she and Britain's Prince William, Duke of Cambridge arrrive for the Easter Mattins Service at St. George's Chapel, Windsor Castle. Britain's Queen Elizabeth II celebrates her birthday on Sunday, marking 93 years in the public glare. AFP
Britain's Catherine, Duchess of Cambridge and her husband, Prince William, Duke of Cambridge with Mike Tindall and Zara Phillips arrive for the annual Easter Sunday Service at St Georges Chapel in Windsor Castle, Britain. The Easter Mattins Service is attended every year by the Royal Family. This year the service falls on the Queen's Elizabeth II birthday. EPA
Britain's Queen Elizabeth leaves the annual Easter Sunday Service at St Georges Chapel in Windsor Castle, Britain. The Easter Mattins Service is attended every year by the Royal Family. This year the service falls on the Queen's Elizabeth II birthday, who turns 93. EPA
The President of the United Arab Emirates, Sheikh Khalifa bin Zayed Al Nahyan, arrives in Windsor for a State Visit to the United Kingdom as the guest of Her Majesty The Queen. His Higness arrived at Windsor Castle by carriage , inspected the Guard of Honour and then after a brief meeting with the Queen attended a Stat Lunch in the Waterloo Chamber of Windsor Castle in 2013. Photo by Ian Jones
Queen Elizabeth, Sheikh Khalifa, and Prince Philip leave following the inspection of the Guard of Honour at Windsor Castle in 2013. Toby Melville / AP Photo
Sheikh Khalifa is greeted by Queen Elizabeth II and Prince Philip, the Duke of Edinburgh on the Royal Dais outside Windsor Castle in 2013. Dan Kitwood / Getty Images
Sheikh Mohammed bin Zayed, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the Armed Forces, with Queen Elizabeth, Prince Philip and Prince Andrew at Sheikh Zayed Grand Mosque in 2010. Andrew Henderson / The National
Britain’s Queen Elizabeth attends a lunch at Al Mushrif Palace hosted by Sheikh Khalifa, President of the UAE, and members of the ruling family in 2013. Ian Jones
Queen Elizabeth II with the President of the United Arab Emirates, Sheikh Khalifa bin Zayed Al Nahyan,centre, and Prince Phillip on the Royal Dais in Windsor, as he begins a State Visit to the UK in 2013. AP Photo
Queen Elizabeth ll inaugurates the tower in 1979 as part of her tour of the UAE. Here she is appointing Ruler of Dubai, Sheikh Rashid, a Knight Grand Cross of the Order of Saint Michael and Saint George. The British honour is conferred on people holding positions of authority. Prince Philip stands to the back left. Tim Graham / Getty Images
A photograph of Queen Elizabeth with Sheikh Zayed, the UAE's Founding Father during a state visit to the country in 1979. Courtesy: Zaki Anwar Nusseibeh
Queen Elizabeth ll and Prince Philip, the Duke of Edinburgh with Sheikh Zayed, the UAE's Founding Father on board the Royal Yacht Britannia during a state visit to the UAE on February 25, 1979. Anwar Hussein/Getty Images
Queen Elizabeth II meets with Sheikh Zayed, the UAE's Founding Father during a state visit 40 years ago. Courtesy: Al Ittihad
Queen Elizabeth II meets Sheikh Mohammed at Emirates Palace on November 25, 2010 in Abu Dhabi during her state visit to the Middle East.. Chris Jackson / Getty Images
Britain's Queen Elizabeth leaves the annual Easter Sunday Service at St Georges Chapel in Windsor Castle, Britain, 21 April 2019. The Easter Mattins Service is attended every year by the Royal Family. This year the service falls on the Queen's Elizabeth II birthday, who turns 93. EPA
Catherine, Duchess of Sussex curtsies as Queen Elizabeth II arrives for the Easter Sunday service at St George's Chapel in Windsor, England. Getty Images
Members of the royal family greet Queen Elizabeth II as she arrives for the Easter Sunday service at St George's Chapel in Windsor, England. Getty Images
Zara (L) and Mike Tindall, Britain's Catherine, Duchess of Cambridge (C) and Britain's Prince William, Duke of Cambridge (2nd R) stand by as Britain's Queen Elizabeth II arrrives for the Easter Mattins Service at St. George's Chapel, Windsor Castle. Britain's Queen Elizabeth II celebrates her birthday on Sunday, marking 93 years in the public glare. AFP
Britain's Catherine, Duchess of Cambridge (L) smiles as she and Britain's Prince William, Duke of Cambridge arrrive for the Easter Mattins Service at St. George's Chapel, Windsor Castle. Britain's Queen Elizabeth II celebrates her birthday on Sunday, marking 93 years in the public glare. AFP
Britain's Catherine, Duchess of Cambridge and her husband, Prince William, Duke of Cambridge with Mike Tindall and Zara Phillips arrive for the annual Easter Sunday Service at St Georges Chapel in Windsor Castle, Britain. The Easter Mattins Service is attended every year by the Royal Family. This year the service falls on the Queen's Elizabeth II birthday. EPA
Britain's Queen Elizabeth leaves the annual Easter Sunday Service at St Georges Chapel in Windsor Castle, Britain. The Easter Mattins Service is attended every year by the Royal Family. This year the service falls on the Queen's Elizabeth II birthday, who turns 93. EPA