Britain's Catherine, Duchess of Cambridge (C), Prince Harry (C-L) and Camilla, Duchess of Cornwall (L) stand on the balcony of Buckingham Palace with other Royal family members during the Trooping the Colour ceremony in London, Britain, 11 June 2011. The Queen's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
A handout picture provided by the British Ministry of Defence (MOD) shows military aircrafts performing a flypast during the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/Sgt Andy Malthouse ABIPP / HANDOUT MANDATORY CREDIT: CROWN COPYRIGHT HANDOUT EDITORIAL USE ONLY/NO SALES HANDOUT EDITORIAL USE ONLY/NO SALES
A handout picture provided by the British Ministry of Defence (MOD) shows a general view of the troops of the Household Division as they take part in the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April , but Trooping the Colour marks the Monarch's official birthday. EPA/Cpl Steve Blake RLC (Phot) / HANDOUT MANDATORY CREDIT: CROWN COPYRIGHT HANDOUT EDITORIAL USE ONLY/NO SALES
Troops from the Household Division march in front of Buckingham Palace during the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April , but trooping the colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Troops from the Household Cavalry Division take part in the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April , but trooping the colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Troops from the Household Division march in front of Buckingham Palace during the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April , but trooping the colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Duchess of Cambridge (L) and the Duke of Cambride (R) stand on the balcony of Buckingham Palace during the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Queen Elizabeth II (L) and Prince Philip, Duke of Edinburgh (R) wave on the balcony of Buckingham Palace during the Trooping the Colour ceremony in London, Britain, 11 June 2011. The Queen's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Duchess of Cambridge (R) arrives with the Duchess of Cornwall (L) at Buckingham Palace during the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Duchess of Cambridge (L) and the Duke of Cambride (R) stand on the balcony of Buckingham Palace during the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Prince William the Duke of Cambridge rides a horse during the Trooping the Colour ceremony outside Buckingham Palace in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April , but trooping the colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Camilla Duchess of Cornwall (L) and Catherine Duchess of Cambridge (R) attend the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April , but trooping the colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Duchess of Cambridge (L) and the Duke of Cambride (R) stand on the balcony of Buckingham Palace during the Trooping the Colour ceremony in London, Britain, 11 June 2011. Queen Elizabeth II's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Queen Elizabeth II (L) and Prince Philip, Duke of Edinburgh (R) wave on the balcony of Buckingham Palace during the Trooping the Colour ceremony in London, Britain, 11 June 2011. The Queen's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Queen Elizabeth II (C-L) and Prince Philip, Duke of Edinburgh (C-R) watch military aircrafts fly over on the balcony of Buckingham Palace with other Royal family members during the Trooping the Colour ceremony in London, Britain, 11 June 2011. The Queen's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
Britain's Queen Elizabeth II (C-L) and Prince Philip, Duke of Edinburgh (C-R) are seen on the balcony of Buckingham Palace with other Royal family members during the Trooping the Colour ceremony in London, Britain, 11 June 2011. The Queen's actual birthday is 21 April, but Trooping the Colour marks the Monarch's official birthday. EPA/FACUNDO ARRIZABALAGA
