LONDON, ENGLAND - JUNE 10: Sophie, Countess of Wessex attends a lunch after the National Service of Thanksgiving as part of the 90th birthday celebrations for The Queen at The Guildhall on June 10, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
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Getty Images Entertainment Jeff Spicer

LONDON, ENGLAND - JUNE 10: Sophie, Countess of Wessex attends a National Service of Thanksgiving as part of the 90th birthday celebrations for The Queen at St Paul's Cathedral on June 10, 2016 in London, England. (Photo by Danny Martindale/WireImage)
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WireImage Danny Martindale

LONDON, ENGLAND - JUNE 10: James, Viscount Severn, Lady Louise Windsor and Sophie, Countess of Wessex attend a National Service of Thanksgiving as part of the 90th birthday celebrations for The Queen at St Paul's Cathedral on June 10, 2016 in London, England. (Photo by Danny Martindale/WireImage)
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WireImage Danny Martindale