Britain's Queen Elizabeth (C) stands on the balcony of Buckingham Palace with Camilla, Duchess of Cornwall (L), Prince Charles (2nd L), Prince William (2nd R) and Catherine, Duchess of Cambridge after the Trooping the Colour ceremony in central London June 15, 2013. Trooping the Colour is a ceremony to honour the sovereign's official birthday. REUTERS/Paul Hackett (BRITAIN - Tags: ANNIVERSARY ENTERTAINMENT SOCIETY ROYALS TPX IMAGES OF THE DAY) © Bild: Reuters/PAUL HACKETT Queen Elizabeth II. 15.06.2013 "Trooping the Colour" ohne Prinz Philip Queen Elizabeth II. kam zu ihrer offiziellen Geburtstagsfeier allein. © Bild: Reuters/PAUL HACKETT Britain's Queen Elizabeth stands on the balcony of © Bild: Reuters/LUKE MACGREGOR Britain's Queen Elizabeth attends the Trooping the © Bild: Reuters/PAUL HACKETT Britain's Queen Elizabeth leaves Buckingham Palace © Bild: APA/FACUNDO ARRIZABALAGA BRITAIN ROYALTY © Bild: APA/FACUNDO ARRIZABALAGA BRITAIN ROYALTY © Bild: APA/FACUNDO ARRIZABALAGA BRITAIN ROYALTY © Bild: APA/KAREL PRINSLOO FILE BRITAIN PRINCE PHILIP HOSPITAL © Bild: APA/FACUNDO ARRIZABALAGA BRITAIN ROYALTY