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Robert Heinlein is a famous science fiction author who had a recurring character, Lazarus Long. He was Heinlein's alter ego and had some interesting sayings that were even collected into a book of its own. One was something like: the perfect lady is the absolute picture of propriety in public but can check that propriety at the bedroom door, enter, and do her whorish best.
Classy is usually best in public unless you're out of town on a getaway, then you can be that other woman. You see it all the time in places like Las Vegas and Atlantic City. But in private, the sluttier and trashier the better, pretty much.