You address someone as "Your Highness" when referring to royalty, such as a king, queen, prince, or princess. This title is used to show respect and deference to individuals of high rank within a monarchy. The term is often employed in formal settings or when speaking directly to the royal person. In some cultures, variations of this title may exist, but it generally signifies a position of nobility.
That is the correct spelling for "highness" (elevation, or a form of royal address).
Your Royal Highness or Imperial Highness It depends on the country and rank of the Princess because some princesses have the style "Highness" insetad of Royal or Imperial Highness.
Yes.
First time your Royal Highness, then after that, Madam.
'His Royal Highness The Prince of Wales', if your meeting the prince in person in the first instance you would address him as 'Your Royal Highness' and subsequently 'Sir'
In various ways: Your Royal Highness (eg in UK senior members of the royal family) Prince (eg in UK junior members of royalty.....after her divorce Dianna was NOT called Royal Highness) Serene Highness (eg Monaco, Liechtenstein) Imperial Highness (eg Japan)
"Your Royal Highness"
You would address a queen as "Your Majesty" or "Your Royal Highness".
Her Royal Highness or His Royal Highness.
Her Royal Highness The Princess Royal Buckingham Palace London SW1A 1AA
First depending on your gender bow/curtsy, and call him, Your Royal Highness and after words Sir
Highness is a lower rank of a Royal Highnessbecause a Highness may be a distant relative of the monarch whereas the a Royal Highness may be a sister, brother, son, daughter etc.