NEW YORK, NY - DECEMBER 09: Catherine, Duchess of Cambridge, visits the National September 11 Memorial Museum on December 9, 2014 in New York City. (Photo by Carl Court - WPA/Getty Images)
NEW YORK, NY - DECEMBER 09: Catherine, Duchess of Cambridge, visits the National September 11 Memorial Museum on December 9, 2014 in New York City. (Photo by Carl Court - WPA/Getty Images)