The last book I read on clothing told me to ensure that my makeup matched my accessories, which might do for Mr Kressley on some occasions, but wasn't much encouragement for me to continue.
Not that I am in a position to critique this book, but he does seem to know what he is talking about. Polyester is bad, ok? Natural is good. And no pleats.
I don't think I could get away with no socks with a suit, and velvet slippers though.