I think an assumption behind this book is that readers are not so much looking to wear all pieces from the same era like a costume, but rather they are looking to find unique pieces to wear, according to their own sense of style.
If you are searching to reproduce a specific era, I would seek another fashion book that was specifically written about that era. However, if you are interested in fashion in general and vintage in particular, this book is for you. I would recommend this book to anyone, but especially someone who wants to find unique clothing and learn a little bit about 20th century clothes.
WEARING VINTAGE is the ultimate guide to finding, fixing and looking fabulous in vintage. Filled with ideas, examples and information about both men's and women's clothing and accessories-and featuring color photos on every page-it unlocks the endless possibilities of "vintage chic," and shows how everyone, from fashion mavens to starving college students, can look great in clothing from the past.