Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge, pose with their son, Prince George, for an official family portrait at Kensington Palace. Jason Bell - Camera Press/Getty Images hide caption

itoggle caption Jason Bell - Camera Press/Getty Images

A worker of a games company poses with placards depicting a "royal baby" near the St. Mary's Hospital Lindo Wing in London on Thursday. While Buckingham Palace has been mum on the subject, Saturday was rumored to be the official due date for the child who will become the third in line to the British throne. Lefteris Pitarakis/AP hide caption

itoggle caption Lefteris Pitarakis/AP

Britain's Prince William, the Duke of Cambridge, and his wife Catherine, Duchess of Cambridge, as she was released from King Edward VII hospital in central London earlier today. Leon Neal/AFP/Getty Images hide caption

itoggle caption Leon Neal/AFP/Getty Images

Hullo: The real Queen Elizabeth II, we swear, in 1961. PA Photos /Landov hide caption

itoggle caption PA Photos /Landov