From new public holidays to how money will be printed, the Queen's death has prompted a number of significant changes across the world.
But for her great-grandson Prince Louis, 4, it's his extended family summers that will never be the same again.
The youngest son of the Prince and Princess of Wales has been asking "many questions" as he tries to understand the loss of his beloved "Grannie" ahead of her state funeral today. Namely, whether he will still be able to "play games" with the Queen at Balmoral.
Speaking in a clip from Channel 9 news, Australia's Governor-General David Hurley, who met Kate Middleton at Buckingham Palace on Saturday, revealed how the children are coping with the family's loss.