NEW YORK, NY - DECEMBER 09: Catherine, Duchess of Cambridge, walks in the rain to a tour of the lobby of One World Trade Center after a visit to the National September 11 Memorial and Museum on December 09, 2014 in New York City. The couple, who are traveling without their son Prince George, are on a three-day U.S. east coast visit. This is the Duke and Duchess' first official visit to New York City. ( Photo By Shannon Stapleton-Pool/Getty Images)
