in (some kind of) fashion
In a certain manner or kind of way (of doing something). Last week, in a rather surprising fashion, the usually conservative tech company announced it would be opening up its source code to allow aspiring programmers to rework their popular web browser in new and innovative ways. The team won the championship in dramatic fashion, scoring in the final seconds of the game.
in fashion
in style; current and socially acceptable. Is that kind of thing still in fashion? It won't be in fashion very long.
in fashion
Also, in style. See under go out, def. 5.