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Britain's Queen Elizabeth waves next to Prince Charles and Prince William, Duke of Cambridge, during a special concert "The Queen's Birthday Party" to celebrate her 92nd birthday at the Royal Albert Hall in London

Britain's Queen Elizabeth waves next to Prince Charles and PrinceÊWilliam, Duke of Cambridge, during a special concert "The Queen's Birthday Party" to celebrate her 92nd birthday at the Royal Albert Hall in London, Britain April 21, 2018. Andrew Parsons/Pool via Reuters

Royals William and Kate in Singapore

Britain's Prince William and his wife Catherine arrive in Singapore Tuesday, kicking off a nine-day Southeast Asian and Pacific tour marking Queen

Elizabeth II's Diamond Jubilee.