LONDON, ENGLAND - JULY 08: Catherine, Duchess of Cambridge attends day nine of the Wimbledon Tennis Championships at Wimbledon on July 8, 2015 in London, England. (Photo by Karwai Tang/WireImage)

LONDON, ENGLAND - JULY 08:  Catherine, Duchess of Cambridge attends day nine of the Wimbledon Tennis Championships at Wimbledon on July 8, 2015 in London, England.  (Photo by Karwai Tang/WireImage)