In this image from video, The Duke and Duchess of Cambridge leave the Lindo Wing of St. Mary's Hospital in London, Tuesday, July 23 2013, carrying their newborn son, the Prince of Cambridge who was born Monday, into public view for the first time. The boy will be third in line to the British throne. (AP Photo/APTN)

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In this image from video, The Duke and Duchess of Cambridge leave the Lindo Wing of St. Mary's Hospital in London, Tuesday, July 23 2013, carrying their newborn son, the Prince of Cambridge who was born Monday, into public view for the first time. The boy will be third in line to the British throne. (AP Photo/APTN)