The royal family has revealed the Queen’s first official portrait, which was shot nearly 70 years ago, in commemoration of the historic anniversary.

Her Majesty was shown wearing the magnificent George IV State Diadem in a black-and-white photograph released to the royal family’s official Instagram page today.

“1952: Her Majesty sat for her first official image only twenty days after her accession to the throne,” the caption stated.

As we work down to the #PlatinumJubilee Celebration Weekend, we’ll be posting an image of The Queen every day for the next 70 days — one for each year of Her Majesty’s 70-year reign.”

The letter also provided some context for the image, revealing that it was taken by Dorothy Wilding for use on new coins, banknotes, and stamps.

“In 1952, rationing was still in force in the UK for some items following World War Two,” the caption read.

Tea restrictions came to an end this year, albeit not totally until 1954.”

The Government has revealed that Brits would be given to a four-day weekend in June to commemorate the Queen’s Platinum Jubilee.

For Her Majesty’s 70th year on the throne, the May Bank Holiday Weekend, which traditionally comes at the end of the month, will be shifted to Thursday, June 2.

After that, the weekend will be extended with an extra day off on Friday, June 3.

It is the first time in British history that a king has accomplished this milestone.

A jam-packed calendar of activities will “reflect on the monarch’s reign, and her effect on the United Kingdom and the globe since 1952.”

The reign of Queen Elizabeth II began on February 6, 1952, and ended on June 2, 1953, with her coronation.

Her Majesty’s George IV diadem, which originates from 1821 and contains 1,333 diamonds, was adjusted in 1902 by Queen Alexandra, who removed 11 diamonds to make it suit her smaller head.

It has been passed down through the monarchy for many centuries and is only worn on ceremonial occasions like the State Opening.