LONDON, UNITED KINGDOM - JUNE 12: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Zara Phillips and Sophie, Countess of Wessex watch a carnival parade as they attend 'The Patron's Lunch' celebrations to mark Queen Elizabeth II's 90th birthday on The Mall on June 12, 2016 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
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Getty Images Entertainment Max Mumby/Indigo

LONDON, ENGLAND - JUNE 12: Sophie, Countess of Wessex greets guests during a walkabout at "The Patron's Lunch" celebrations for The Queen's 90th birthday at The Mall on June 12, 2016 in London, England. (Photo by Eamonn M. McCormack/Getty Images for The Patron's Lunch)
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Getty Images Entertainment Eamonn M. McCormack