Here is a first attempt at wearing a bright red gingham shirt with a suit, something that should probably be reserved for alpha males on their home ground. In the Jermyn Street tradition, the very loud check is paired with a conservative suit and necktie in what is here a not entirely satisfactory attempt to moderate its impact. Of course, that gingham is yelling at top volume.
The shirt body would probably be fine with a blazer, on blazer-appropriate occasions, but the formality of the white collar and turnback cuffs are better with a suit. I think I wll try it with a tan suit next.