Kate Middleton Pregnancy: Photo of Her, William and LeBron Shows Breach in Protocol

DEC 9: Catherine, Duchess of Cambridge (R) and New York City Mayor Bill de Blasio's wife, Chirlane McCray, greet guests at the Northside Center for Child Development in New York City on Dec. 8, 2014. Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are on their official two-day visit to the United States. Neilson Barnard/Getty Images