Exact details about Queen Elizabeth II's funeral have been revealed - from the Order of Service to which of Her Majesty's favourite hymns will be sung. And like with many age-old traditions the royal family must follow, there are strict rules on what to wear for formal events including today's service.
However as dress code rules have emerged, it shows that women have been permitted to wear trouser suits. The protocol at royal events usually means women are required to wear some form of dress, but it is believed this is the first time a trouser suit has been an acceptable option not just for men.
Guidance on what to wear was issued to all attendees with an invite to the funeral of the longest-serving British monarch. Alongside trouser suits, there is the option to wear a day dress along with a choice of hat, while men have been encouraged to wear morning dress or lounge suits.
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Armed Forces veterans are required to wear full ceremonial dress with mourning bands.
The royal ladies will be expected to wear either a hat or fascinator to pay their respects and to honour longstanding traditions.
Queen Consort Camilla and Princess Kate, alongside all other royal women, will wear black dresses and black tights with a traditional hat and lace veil in some form.
Meanwhile, some members of the royal family may stray from traditional mourning attire.
According to a fashion coach, Princess Charlotte may opt for a "softer" approach for her great-grandmother's funeral.
The seven-year-old royal may not wear an entirely black outfit for the service, said Miranda Holder - who is known for her viral TikTok style videos.
Miranda said: "Kate has broken with tradition on quite a few levels really over the years and they are setting the trend for the more modern monarchy.
"So it will be interesting to see whether they do full black or just references to and whether Charlotte just has some black accessories, maybe a headband or something like that.
"She might simply wear a dark colour and it might be slightly softer."
Prince George, slightly older than Charlotte at nine-years-old, is likely to be dressed more formally, according to Miranda.
Although black is traditionally worn, other dark colours can be worn respectfully, The Express reports.
During the mourning period, both Prince Harry and Prince William have been photographed wearing navy suits with a black tie.
The two brothers stepped out in matching coloured suits to greet well-wishing members of the public at Windsor upon the passing of the Queen.
Some of the 2,000 guests have been filing into Westminster Abbey this morning ahead of the funeral which commences at 11am.
King Charles III will lead a sombre procession behind his mother's coffin on the short journey from Westminster Hall to the abbey.
