Derived from the term 'Queen', 'Regal' is used to describe someone that whilst not necessarily gay, shows tendencies towards such and dresses in a particularly effeminate way. Generally used in reference to males and usually considered as the stage between between metro-sexuality and fully fledged homosexuality.
"That tight fitting striped singlet your wearing there my metro-sexual friend, is particularly regal"
"Elton John looked very regal indeed at the Grammy awards last night didn't he?"
"Naughty Corey and his 'gang' are the most regal looking bunch of misfits I've ever seen"
"This is a pretty regal CD collection you have here my friend.... Bette Midler, come on!"