It is set to be the first Coronation in 70 years - so it's no wonder the royals have been carefully planning their outfits.
And time is running out to pick the perfect ensemble as the ceremony at Westminster Abbey, which will see both King Charles and Queen Camilla crowned, is in just over a month's time.
However, it has been reported that conversations are still ongoing over what the Princess of Wales will wear on the big day, with fans worried she may break tradition.
It has long been said that Charles' Coronation will be a scaled-back version of his mother the late Queen's in 1953 - with much more low-key regalia chosen this time around.
There have even been suggestions that royal ladies such as Kate and Sophie, the Duchess of Edinburgh, may not wear tiaras for the big event.
At the last Coronation, nearly all royal women wore tiaras and at George VI's crowning in 1937, a young Princess Elizabeth and Princess Margaret even wore coronets - small crowns.
However, according to PEOPLE, the conversation and decision surrounding wearing tiaras is still ongoing with many royal watchers desperate to see members of the Firm wearing their finest gowns and jewellery for the ceremony.
But as one respected royal jewellery blogger told the publication, it is possible a daytime formal dress code could be set, which would see tiaras replaced with hats.
Lauren Kiehna, the expert behind the blog The Court Jeweller, explained: "I'm certainly hoping we'll see coronation tiaras, but it's possible that Charles is following the example of some of his European counterparts, like the King of the Netherlands, and setting a daytime formal dress code for the event.
"That would mean that we could still see some grand jewels, like necklaces, brooches and earrings but no tiaras. I'll be sad if that's true but it may just be another part of the 'de-formalising' of the British royal world that has taken place over the last several decades."
However, two people that will definitely be wearing glittering crowns on the day of the Coronation will be the King and Queen.
Earlier this year it was revealed that Camilla will be crowned with Queen Mary’s Crown on the big day.
It is the first time in recent history that an already existing crown will be used during the Coronation of a Queen Consort instead of a new one being made.
However, Buckingham Palace says that some minor changes and additions will be made to it by the Crown Jeweller "in keeping with the longstanding tradition that the insertion of jewels is unique to the occasion, and reflects the Consort’s individual style".
The changes will see the crown reset with the Cullinan III, IV and V diamonds, which were part of Queen Elizabeth's personal jewellery collection for many years and often worn by her as brooches.
The Cullinan III and the Cullinan IV diamonds, which, when worn together form a brooch, are said to be worth more than £50million.
In addition, four of the crown's detachable arches will be removed to give it a new look when compared to when Queen Mary wore it over 100 years ago.
Charles will be crowned with the traditional St Edward’s Crown during the historic event at Westminster Abbey.
This had been removed from the Tower of London for modification work but has now been returned to display.
