Thou shalt not wear anything with the word Mod emblazoned upon it. Or a roundel. Or a Union Jack.
Thou shalt not wear a track suit top (not even one of those nice Fila ones). Unless on your way to or from some kind of sporting activity.
Similarly, thou shalt not wear bowling shoes unless thou be bowling.
Thou shalt not wear a pork pie hat. Unless you are an elderly black man. Which you are not.
Thou shalt have no polo shirts but Fred Perry
Thou shalt not have a handkerchief poking out of the breast pocket of thy Crombie coat.
Thou shalt not wear braces