Flapper
A flapper was a term for women that lived in Earth's Roaring Twenties and were known for a particular style of clothing.

In 2370, flappers were part of the Orient Express holograms seen by members of 's crew. ()

In 2372, the artwork for the front cover of The New included a flapper dancing with a gentleman. ()
 
In 2375, a Silver Blood copy of Tom Paris described the kind of "down-to-Earth" 1920s Chicago honeymoon he had in mind for himself and B'Elanna Torres as consisting of "Speakeasies, flappers, the ." ()

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de: Flapper
Slang
Fashion