The royal portrait was taken by renowned photographer Mary McCartney, the eldest daughter of the legendary singer, Sir Paul McCartney.
The choice of the iconic name of McCartney is only fitting, as in 1965 The Queen met the Beatles to award them all MBEs, which was a revolutionary step in the rise of popular culture.
The photograph illustrates a typical work scenario for Her Majesty from the past 63 years of her historic reign. The image, set in The Queen’s private quarters, shows her sitting at her desk, calmly working through a red box of state papers.
The Queen is dressed in a floral print dress by couturier Karl Ludwig who was last seen publically dressing the monarch during a visit to Australia in 2011. She is surrounded by family photographs and next to her is one of her trademark Launer London handbags.
The Queen has taken the title of Britain’s longest reigning monarch from her great-great grandmother Queen Victoria.
On September 9 at 5.30pm local time, Queen Elizabeth II officially served Britain and the Commonwealth for 63 years and seven months. Buckingham Palace said that this equates to exactly 23, 226 days, 16 hours and 23 minutes.
How did the 89-year-old celebrate this milestone? By carrying on with business as usual.
The Queen acknowledged the historical significance of the day by fulfilling her royal duties, opening The Scottish Borders railway, which is a new AU$650 million rail line.
Britain and, in particular, London commemorated the occasion with the HMS Belfast sounding a four-gun salute and a procession along the Thames. This featured a flotilla of historic vessels, leisure cruisers and passenger boats.
An additional commemoration is the revealing of the fifth definitive coin portrait of Queen Elizabeth II since her crowning in 1952.
The effigy depicts The Queen wearing drop earrings and the royal diamond diadem crown, which she wore for her coronation. Jody Clark, 33, is the first Royal Mint engraver to be selected to create a definitive royal coinage portrait in over 100 years.
He was chosen from numerous anonymous submissions and is the youngest of all the designers to have created portraits of the queen throughout her rein, and soon his work will be in pockets and purses all around England.
All five coin portraits are available for viewing at the National Portrait Gallery in London.
