I recently watched Goodfellas (1990) and Casino (1995). The director of both movies is Martin Scorsese. But I noticed something quite interesting. The shirt collars of the gangsters in both movies are some kind of strange. I never seen such collars. The collars are very close to each other. The gap between is very small. I can't describe it better :-)

Is this a Scorsese thing or just a fashion style from the 70s/80s/90s or an italian fashion style?

Look at the shirt collars shown on the movie posters (or watch the trailers):