LONDON, ENGLAND - JUNE 10: (L-R) Lady Mayoress Juliet Mountevans, Catherine, Duchess of Cambridge, Prince Edward, Earl of Wessex and Sophie, Countess of Wessex attend 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)
