However, their aunt Kate Middleton reportedly wants them to attend the historic event, despite the ongoing feud between the Duke and Duchess of Sussex and other senior members of the royal family.
An insider revealed that Princess Diana's daughter-in-law has expressed her fondness for Archie and Lilibet, and hopes that they will join their royal cousins at the ceremony.
There is even speculation that the children may appear on the Buckingham Palace balcony if they do attend.
Meanwhile, King Charles also has positive feelings towards Harry and Meghan's kids, but the insider suggests that the attention-seeking behavior of the parents may be a hurdle in inviting them to the coronation.
Prince William and Kate Middleton's children, on the other hand, are expected to have a big role at the landmark ceremony and will be riding in a carriage behind the newly-crowned King and Queen.