King Bhumibol Aduladej and Queen Sirikit of Thailand arrive at Westminster Abbey to pay homage at the tomb of the Unknown Warrior, one of the first official engagements of their State visit to London. (Photo by PA Images via Getty Images)
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LONDON, UNITED KINGDOM - JULY 19: Queen Queen Sirikit Kitiyakara Of Thailand at Westminster Abbey in London on July 19, 1960 - King Bhumibol Adulyadej of Thailand and wife Queen Sirikit Kitiyakara are in London for a threee- day state visit. (Photo by Gamma-Keystone via Getty Images)
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Bhumibol Adulyadej (1927 - 2016), King of Thailand, and Queen Sirikit, arriving at Westminster Abbey, London, on the first day of their three-day state visit to Britain, 19th July 1960. At the abbey, the King and Queen laid a wreath on the Tomb of the Unknown Soldier. (Photo by Paul Popper/Popperfoto via Getty Images/Getty Images)
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LONDON, UNITED KINGDOM - JULY 19: Queen Queen Sirikit Kitiyakara Of Thailand signs the visitors' book after the wreath lying ceremony on the tomb of the Unknown Warrior at Westminster Abbey in London on July 19, 1960 - King Bhumibol Adulyadej of Thailand and wife Queen Sirikit Kitiyakara are in London for a threee- day state visit. (Photo by Gamma-Keystone via Getty Images)
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Queen Sirikit, consort of Thai monarch King Bhumibol Aduladej, steps aboard a London bus after attending a reception at the Thai Embassy in Kensington, London. The bus, on private charter, was believed to be taking the Queen on a tour of London. (Photo by PA Images via Getty Images)
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