The crown of the Holy Roman Empire, before it ended up in the German treasury, was an invariable attribute in portraits of rulers.
When the crown was seen by American soldiers, and couldn't resist trying it on, it was found to be twice the size of a normal human head. Anthropologists claim that people used to be much shorter, but legends, on the contrary, claim that the rulers of different nations turned out to be people of tall stature with fair skin.
It seems that "Your Majesty" is not just a title, but a statement of the size of rulers.
