I'm looking for a suit that is both costly and gentlemanly, so that everyone who sees it (or everyone who knows what to look for) knows the wearer comes from/goes to some important event. The character (mid-twenties, from an upper class background, not slim) is a customer at Savile Row, although the observer doesn't know that.
The trouble I'm having is matching. I can research fabrics and patterns for ages and still don't know what goes with what. What colours go together for suit, tie and shirt?
I read somewhere that Merino is often used in expensive suits, for its high thread count. Other things I have considered are: single-breasted jacket with two vents, three buttons, pleated trousers, peak lapels and no pocket flaps. Brocade silk tie, maybe in burgundy.
Originally I thought of a charcoal grey suit with pinstripes, but the character is fairly tall, so that might not be a good choice.
My question is: does that work? I'm open for suggestions and alternatives :)