WINDSOR, UNITED KINGDOM - MARCH 17: HRH Princess Anne, The Princess Royal presents the traditional sprigs of shamrock to the guards as she visits the 1st Battalion Irish Guards at their new home, Victoria Barracks, on St Patrick's Day Parade on March 17, 2009 in Windsor, England. (Photo by Samir Hussein/WireImage)

WINDSOR, UNITED KINGDOM - MARCH 17:  HRH Princess Anne, The Princess Royal presents the traditional sprigs of shamrock to the guards as she visits the 1st Battalion Irish Guards at their new home, Victoria Barracks, on St Patrick's Day Parade on March 17, 2009 in Windsor, England.  (Photo by Samir Hussein/WireImage)