LONDON, ENGLAND - NOVEMBER 09: Basia Briggs (R) and Princess Michael of Kent attend the launch of "Quicksilver" by HRH Princess Michael of Kent, the final volume of the Anjou trilogy, at the home of Basia and Richard Briggs, on November 9, 2015 in London, England. (Photo by David M. Benett/Dave Benett/Getty Images)