Royal Highness

Royal Highness (abbreviation HRH) is a style used to address or refer to some members of royal families, usually princes other than monarchs and their female consorts (i.e., kings and queens). When used as a direct form of address, spoken or written, it takes the form "Your Royal Highness". When used as a third-person reference, it is gender-specific (Her Royal Highness or His Royal Highness, both abbreviated HRH) and, in plural, Their Royal Highnesses (TRH).