first two films on this list, suits were made by Douglas Hayward. As a matter of fact, Michael Caine based the character of Alfie on Hayward. Also a certain percentage of Roger Moore's Bond films were costumed by Hayward. You can indeed see Matt S for citations.
Light in the Piazza - Rossano Brazi and George Hamilton (playing his Italian son) look exceptional. The contrast between the fit and cut of their suits is highlighted about halfway through the movie when Barry Sullivan playing an American executive shows up dressed in suits with heavily padded and extended shoulders.