Everything you need to know about the historic event!
The last time Queen Elizabeth held a Trooping The Colour ceremony at Windsor Castle it was a low-key "mini" event as a result of the restrictions surrounding the coronavirus pandemic.
WATCH to see soldiers rehearsing ahead of Saturday's annual event in London!
TheBritishmilitary occasion, which dates back to the 17th century, involves infantry troops marching slowly with their colours to distinguish one regiment from another.
Since 1748,Trooping The Colourtakes place on the same day as theofficial birthdayof theBritishmonarch, which has beenQueen Elizabeth IIsince 1952.
The event is usually held on a Saturday in June atHorse Guards Paradeby St James' Park in theBritishcapital, withmembers of the royal family, invited guests and the general public watching on.
The ceremony is broadcast live by theBBCin the UK, and is also shown on television in Belgium and Germany.
Since 2018, the Associated Press has provided a live stream to viewers across the world on the Time magazine YouTube and Facebook pages, so Australians can tune in to watch the affair.
Normally, The Queen travels down the Mall from Buckingham Palace in a royal procession led by the sovereign escort of Household Cavalry (aka mounted troops or horse guards).
After receiving a royal salute,Her Majestyinspects troops and the Royal Horse Artillery, selecting one guard to 'troop its colour' through the ranks.
The Queenreturns toBuckingham Palaceto watch another march outside the gates, and once a 41-gun salute has been heard to signal the end of thebirthday parade,Queen Elizabethleads theBritish royal familyon to thebalcony of Buckingham Palacefor a Royal Air Force flypast.
Ahead of this year's event, here are some of the most memorable royal family moments from Trooping The Colour throughout the years!
Toddler George stayed with his Spanish nanny Maria Teresa Turrion Borrallo to watch some of the proceedings for the first time from a nearby window, and the baby Prince delighted royal fan watchers by cheekily sticking his tongue out for the cameras.
Trooping The Colour 2015.
The pregnant Princess
A radiantDiana, Princess of Wales, appeared on thebalcony of Buckingham Palacebeside her father-in-lawPrince Philipin June 1982 while heavily pregnant with her first child withPrince Charles.
The wives ofWindsorwore matching mint coloured ensembles, with Kate - who had given birth to her third childPrince Louisless than two months previously - wearing a stylish dress by her favourite designer Alexander McQueen and a hat by Juliette Botterill.