Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Commonwealth Observance Day Service on March 14, 2016 in London, United Kingdom. The service is the largest annual inter-faith gathering in the United Kingdom and will celebrate the Queen's 90th birthday. Kofi Annan and Ellie Goulding will take part in the service.
(March 13, 2016 - Source: Gareth Cattermole/Getty Images Europe)
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