I thought about this topic when someone mentioned his 'spinster aunts' in a TNZ thread.
I wondered if that post would offend somebody. I was really just using the word for comedic effect.
It didn't really offend me, I was just wondering how long such an archaic word will last.
In Australia we have Bachelor and Spinster Balls
Bachelor and Spinster Balls (B&S) events are hosted regularly in rural Australia, known locally as "B & S Balls" or simply "B&S's". They are staged for young (18 years and over) spinsters and bachelors and traditionally the couples dress up in formal wear.[1] Large volumes of cheap alcohol such as beer, spirits, Bundaberg Rum and Jim Beam can be consumed. The activities usually start at night and run until morning, but from mid-afternoon people will start to arrive and the partying/drinking will begin. Country music is often features at these events.
Historically the event has centered around country people trying to find a partner, but in modern times the focus has shifted to having a good time and meeting up with new and old friends, some of whom can live many hours away.[2] This has changed the atmosphere of the events to such a degree that the dress code is relaxed and many do not wear formal gear, preferring to dress in clothes from opportunity shops. Even when they are wearing formal attire, today most of the men (and some of the women) sport akubras, boots and R. M. Williams gear. Some people go in fancy dress, for example, school girls, nurses, clowns or lawn bowlers.
Rest of the Wikipedia article here