 In pictures of Queen Elizabeth II's Platinum Jubilee Celebrations

Queen Elizabeth II watches from the balcony of Buckingham Palace during the Trooping the Colour parade in London on Thursday, June 2

For the first time in history, a British monarch is celebrating 70 years on the throne. Queen Elizabeth II was 25 years old when her reign began on February 6, 1952.

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To mark the unprecedented anniversary, there are Platinum Jubilee celebrations taking place across the country.

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A four-day holiday weekend will include a variety of public events and community activities.

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This will be the Queen's first jubilee without her husband, Prince Philip, who died last year.

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People pack The Mall as the family arrives at the balcony of Buckingham Palace on Thursday

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The Queen walks out onto the Buckingham Palace balcony.

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Catherine, the Duchess of Cambridge, waves during a carriage procession on Thursday. Joining her on the carriage were her three children.

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Planes spell the number 70 as they fly over Buckingham Palace on Thursday

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A 124-weapon salute is shot at the Tower of London as a feature of the Trooping the Color parade

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The Trooping the Color occasion included 1,500 soldiers and officers, 400 musicians, 250 horses, and 70 aircraft, as per the UK Ministry of Defense

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The Queen's Guard marches during the Trooping the Color parade Thursday.

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The Queen is joined by individuals from the royal family in the Buckingham Palace balcony on Thursday

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A few royal fans had Union flags applied to their faces as they accumulated along The Mall in London on Thursday

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People sing the national anthem as they accumulate along The Mall on Thursday.

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