King Charles' coronation will be held on Saturday, May 6 at Westminster Abbey.
The ceremony will be shorter than his late mother's coronation.
The guest list is expected to be cut from 8,000 people to just 2,000.
Buckingham Palace is reportedly pleading with Westminster Abbey to secure more spaces for guests.
The King is keen to maximize the number of people in the Abbey for the coronation.
Only a small minority of politicians, peers, and members of the aristocracy will be invited.
Foreign royals, world leaders, faith leaders, and Houses of Parliament representatives will attend.
Queen Camilla will be crowned with Queen Mary's Crown during the service.
The Crown Jeweller will alter the crown to make it unique to the occasion and reflect the consort's individual style.