LONDON, ENGLAND - JANUARY 30: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall walk through a ticket gate as they prepare to travel on a Metropolitan underground train from Farringdon... more 
LONDON, ENGLAND - JANUARY 30: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall walk through a ticket gate as they prepare to travel on a Metropolitan underground train from Farringdon to Kings Cross as they mark 150 years of London Underground on January 30, 2013 in London, England. (Photo by Chris Jackson - WPA Pool/Getty Images) less 
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Getty Images | Photo By Chris Jackson / Getty Images
Wed, Jan 30, 2013 6:38 AM EST