From the French, En Vogue means what is currently popular, the
social standard &/or
fashionable (trendy, cool, da bomb, chic, hot, hip, happening, groovy, neat, decent, epic)
In English, it's common practice to refer to something fashionable as "en vogue" or "in vogue" (meaning in the current fashion or style). To evoke a sense or flair of French chic, many use the whole French phrase—en vogue. This is
unnecessary but a common way to put on airs, especially in the world of fashion.