Regiphilia
Noun: Regiphilia is the sexual attraction to royalty. This attraction is usually directed towards the regent, but can also manifest towards other parts of the royal family. It is most often seen in countries that has a form of monarchy; but sometimes it even expand further to parliamentary republics: eg. USA. The adjective form is: Regiphile
Regiphilia spreads to republics during big events such as royal weddings.