Britain's Prince Charles, Prince of Wales, with his wife Princess Diana, holds his newborn son Prince William as they leave St. Mary's Hospital, Paddington, London, June 22, 1982. (AP Photo/Staff/Redman)

Britain's Prince Charles, Prince of Wales, with his wife Princess Diana, holding her newborn son Prince William, as they leave St. Mary's Hospital, Paddington, London, June 22, 1982. (AP Photo/Staff/Redman)

Britain's Prince Charles, Prince of Wales, with his wife Princess Diana,taking their newborn son Prince William, as they left St. Mary's Hospital, Paddington, London, June 22, 1982. (AP Photo/Staff/Redman)

Britain's Prince Charles, Prince of Wales, with his wife Princess Diana, holds his newborn son Prince William as they leave St. Mary's Hospital, Paddington, London, June 22, 1982. (AP Photo/Staff/Redman)

FILE - In this June 22, 1982 file photo Britain's Prince Charles, Prince of Wales, with his wife Princess Diana taking their newborn son Prince William, as they left St. Mary's Hospital, Paddington, London. William, the Duke and and Kate, Duchess of Cambridge are very pleased to announce that the Duchess of Cambridge is expecting a baby, St James's Palace officially announced Monday Dec. 3, 2012. (AP Photo/John Redman, File)