The world watched on as the Queen walked into Westminster Abbey for her coronation on June 2, 1953.
At just 27, the former Princess Elizabeth wore the traditional robes and huge crown for the historical day.
Brits lined the streets to celebrate their new Monarch, who technically told the throne a year and a half earlier following the sudden death of her father, George VI.
And while well-wishers loved the celebrations, it turns out there was one part of the day the Queen really didn't enjoy - but she didn't open up about if for decades.
She revealed that the carriage she was driven to Westminster Abbey in was "horrible", and also said her crowns had "disadvantages".
In an interview with the BBC, the monarch shared memories of the day she was crowned and the discomforts she endured on the famous day.
She recalled that the Gold Stage Coach that she travelled in wasn’t ideal, saying: “It’s only sprung on leather. Not very comfortable.”
The uncomfortable coach the Queen travelled in for hours on her coronation day was commissioned in 1760, and has been used in the coronation of every British monarch since George IV, who reigned for 10 years from 1820.
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And during the BBC interview, the Queen mentioned that she believes crowns are "quite important things", despite the fact that they have some ‘disadvantages’, like being incredibly heavy.
In the interview, the Queen also speaks of watching her father, King George VI, assume the throne. She said: "I've seen one Coronation, and been the recipient in the other, which is pretty remarkable."
The Queen is now the third longest-reigning monarch in the world, with Louis XIV, France the longest to date - he reigned for 72 years in total.
In a short clip released before the programme, Prince Charles and Princess Anne are seen playing with their mother's robe when they were children.
Presenter Alastair Bruce said: "Such fun for the children", but the Queen responded: "Not what they're meant to do."
The hour-long show, named The Coronation, is part of the Royal Collection Season, which is a series exploring the importance of the Crown Jewels and the coronation ceremonies.
Charlotte Moore, BBC Director of Content, says: “It is a real honour to have Her Majesty The Queen revealing her intimate knowledge of the Crown Jewels, and fond childhood memories from when her father was crowned King George VI, in this very special film for BBC One.
"In her own words, The Queen will bring to life the enduring symbolic importance of the Coronation ceremonies for modern audiences to enjoy."
We can’t wait to see some of the content which will be released to mark the Queen’s 70 years on the throne.
