LONDON, ENGLAND - JULY 12:  Camilla, Duchess of Cornwall shares a joke with Richard E Grant and Miriam Margolyes as she hosts the 30th Anniversary Garden Party for the National Osteoporosis Society in St James Palace on July 12, 2016 in London, England. Due to inclement weather the event was moved indoors. The Duchess of Cornwall has been connected with the charity for nearly 30 years.  (Photo by Chris Jackson/Getty Images)