A look back at Queen Elizabeth II's Coronation

The Queen wearing the Imperial State Crown and the Duke of Edinburgh in uniform on the balcony of Buckingham Palace. Credit: PA/PA Archive

September 9 marks a historical milestone for the Queen as she becomes the longest-reigning monarch in British history.

The record was previously held by her great-great-grandmother Queen Victoria, who reigned for 63 years and seven months.

Read more: 10 things you probably didn't know about the Queen

Here is a look back at Queen Elizabeth II's Coronation.

There were more than 8000 guests at the Queen's Coronation on the 2 June 1953, and an estimated 3 million people lined the streets of London to catch a glimpse of her.

Crowds gather in London's Trafalgar Square to get a glimpse of the Queen's coach as it passed in procession for the Coronation Credit: PA Wire

The Queen had agreed that her Coronation could be be televised so that as many people as possible could observe the ceremony at Westminster Abbey.

A happy crowd waves to Queen Elizabeth II during a Coronation procession through London. Credit: PA

In a new age of colour broadcasting, it was a televisual treat. Over 20 million people in Britain watched the ceremony on TV and millions more around the world.

Former Tory MP and keen film-maker Lord John Wakehurst charted many key royal events including the Queen's Coronation in "Long to Reign Over Us: The Queen’s Accession.

The Queen wore a sumptuous white satin coronation dress created by the couturier Norman Hartnell.

It featured embroidered national and Commonwealth floral emblems in gold, silver and pastel-coloured silks, encrusted with pearls, crystals and sequins.

The Queen in the Throne room at Buckingham Palace after her Coronation. Credit: PA/PA Archive

The robe of estate, worn when the Queen left Westminster Abbey for the Palace, is made of English purple silk-velvet and is more than 21ft (6.5m) long.

The Queen's Coronation Dress and Robe on display at Buckingham Palace. Credit: Lewis Whyld/PA Wire
The Queen at Buckingham Palace with her maids of honour after her Coronation Credit: PA

Other significant royals also wore majestic outfits to the landmark occasion as seen in the below group picture of the Royal Family and European royals.

The newly crowned Queen Elizabeth II at Buckingham Palace with other members of the Royal family. Credit: PA

Prince Charles was four at the time of the Coronation and wore a cream silk shirt and lace trimmed cuffs with cream woollen trousers and completed his look with black patent shoes with buckles.

Two-year-old Princess Anne was too young to attend the ceremony but still wore a cream silk and lace gown with a silk sash and silk-covered buttons. On her feet were matching cream, silk ballet pumps.

Royal Collection Curator Caroline de Guitaut shows the outfits worn by Princess Anne and Prince Charles for the Coronation. Credit: PA

After the Coronation, Queen Elizabeth II, the Duke of Edinburgh, Prince Charles and Princess Anne, along with the Queen Mother, took to the balcony of Buckingham Palace to greet the assembled crowd.

Queen Elizabeth II and the Duke of Edinburgh with members of the Royal family at Buckingham Palace. Credit: PA