Guardsmen march along the Mall before the Trooping the Colour ceremony in central London June 11, 2011. Trooping the Colour is a ceremony to honour the sovereign's official birthday. [Photo/Agencies]
Guardsmen march along the Mall during the Trooping the Colour ceremony in central London June 11, 2011. Trooping the Colour is a ceremony to honour the sovereign's official birthday. [Photo/Agencies]
