** FILE ** In this Tuesday, July 23, 2013, file photo, Prince George of Cambridge lays in a car seat as his parents, Britain's Prince William and Kate, duchess of Cambridge, leave St. Mary's Hospital exclusive Lindo Wing, in London where the duchess gave birth on Monday, July 22. (AP Photo/Alastair Grant, file)

Photo by: Alastair Grant

** FILE ** In this Tuesday, July 23, 2013, file photo, Prince George of Cambridge lays in a car seat as his parents, Britain's Prince William and Kate, duchess of Cambridge, leave St. Mary's Hospital exclusive Lindo Wing, in London where the duchess gave birth on Monday, July 22. (AP Photo/Alastair Grant, file)