While the Duke and Duchess of Sussex have been asked to grace the ceremony, Prince Archie and little princess Lilibet have not and this might create further tensions.
Although Harry and Meghan have been invited they are not sure if they would want to attend it owing to the royal drama that does not seem to end.
According to Telegraph, the couple have been told that they need not worry as there is a possibility the kids will be included in the list of those invited in the event.
Harry's recent bombshell claims against the rest of the royal family members in his memoir Spare are seemingly affecting his children as the two little ones have not been invited to their grandfather's coronation procession.
A royal source therefore told the publication that Archie and Lilibet are very young and that this is likely the reason why the two have not been invited.
Meanwhile Prince William and Kate Middleton's three kids are expected to attend the ceremony but that is because Prince George is nine years old and Princess Charlotte is set to turn eight just days prior to the Coronation in May.
And now the two have yet to decide if Louis would be taking part as he is just four years old.
So age plays a major factor in royal traditions.