Queen Elizabeth II's 91st Birthday Celebrated In London
/ CBS News
The Honourable Artillery Company fire a 62 gun salute against a backdrop of London's Tower Bridge, on April 21, 2017, as Britain's Queen Elizabeth II celebrates her 91st birthday.
(ADRIAN DENNIS/AFP/Getty Images)
The Honourable Artillery Company fire a 62 gun salute against a backdrop of London's Tower Bridge, on April 21, 2017, as Britain's Queen Elizabeth II celebrates her 91st birthday.
(ADRIAN DENNIS/AFP/Getty Images)
Queen Elizabeth II's 91st Birthday Celebrated In Britain
The Honourable Artillery Company fire a 62 gun salute against a backdrop of London's Tower Bridge, on April 21, 2017, as Britain's Queen Elizabeth II celebrates her 91st birthday.
(ADRIAN DENNIS/AFP/Getty Images)
Members of the King's Troop Royal Horse Artillery take part in a 41 Gun Royal Salute to mark the 91st birthday of Britain's Queen Elizabeth II in Hyde Park, central London on April 21, 2017. (BEN STANSALL/AFP/Getty Images)
41 Gun Royal Salute marks the 91st birthday of Queen ELizabeth II
Members of the King's Troop Royal Horse Artillery take part in a 41 Gun Royal Salute to mark the 91st birthday of Britain's Queen Elizabeth II in Hyde Park, central London on April 21, 2017. / (BEN STANSALL/AFP/Getty Images)
Members of the King's Troop Royal Horse Artillery take part in a 41 Gun Royal Salute to mark the 91st birthday of Britain's Queen Elizabeth II in Hyde Park, central London on April 21, 2017. (BEN STANSALL/AFP/Getty Images)
Members of the King's Troop Royal Horse Artillery take part in a 41 Gun Royal Salute to mark the 91st birthday of Britain's Queen Elizabeth II in Hyde Park, central London on April 21, 2017. (BEN STANSALL/AFP/Getty Images)
Members of the King's Troop Royal Horse Artillery take part in a 41 Gun Royal Salute to mark the 91st birthday of Britain's Queen Elizabeth II in Hyde Park, central London on April 21, 2017. (BEN STANSALL/AFP/Getty Images)
Members of the King's Troop Royal Horse Artillery take part in a 41 Gun Royal Salute to mark the 91st birthday of Britain's Queen Elizabeth II in Hyde Park, central London on April 21, 2017. (BEN STANSALL/AFP/Getty Images)
The Honourable Artillery Company fire a 62 gun salute against a backdrop of London's Tower Bridge, on April 21, 2017, as Britain's Queen Elizabeth II celebrates her 91st birthday.
(ADRIAN DENNIS/AFP/Getty Images)