Another photographer whose work I keep returning to is Rose Callahan, who is based in New York. Her exquisite portraits for her Dandy Portraits blog show men who dress with unusual style and taste. See also her website and blog which showcase other aspects of her work.
The men she photographs for Dandy Portraits dress in a variety of styles, from the traditional to the extremely foppish. As such their styles are extrovert; they obviously don't mind standing out in a crowd. Even if you don't want to dress so extremely, there are themes and ideas in the wardrobes of these unusual men which will provide you with inspiration. Look at the colours, shapes and mixtures of influences and you will find much to help you in your search for style.
All photos Rose Callahan.