I first heard the term “Permanent Fashion”  when reading the book “Dressing the Man: Mastering the Art of Permanent Fashion” by Alan Flusser.  From Amazon: Taking the reader through each major clothing classification step-by-step, this user-friendly guide helps you apply your own specifics to a series of dressing options, from business casual and formalwear to pattern-on-pattern coordination, or how to choose the most flattering clothing silhouette for your body type and shirt collar for your face.

This is a must read for men who care about the way they look.