This book departs from most books and teaching on modesty by emphasizing looking to our culture to discover what is modest. While most may believe that culture plays a role in determining what is modest, I have not seen any other Christian writing that gives culture such a large role and in this I believe it deviates from historic Christian teaching on the subject (though such writings have sometimes mentioned living “according to our place and station”, they have seldom, if ever, given such a great emphasis to the role of culture in determining what is modest). This book, it must be said, doesn't give culture the last word, it says there are times when we should not "cross clear biblical lines" regardless of what our culture does, (p.71) (it doesn't say what those lines are and of course that seems to be the problem with modesty, the Bible doesn't give any clear lines). However, the overwhelming emphasis of this book is on seeking to base our clothing choices on what our culture regards as appropriate, even saying that we can “violate” modesty by dressing more “conservatively” than our culture does (p.70). It even goes so far as to say "you may be disturbed by our culture's apparent jettisoning of the virtue of modesty simply because you have embraced an earlier (or different) standard that you then uncharitably demand that other people live up to." (p.25) So this book is not just saying that I can dress as (im)modestly as my culture, it seems to be saying I should!
This book bases the high regard it gives to culture on two things that I can see. First, this claim is based on CS Lewis's teaching that modesty must be distinguished from chastity. That is, the thinking goes, modesty is not a matter of sexual purity and therefore it can change drastically from culture to culture (Lewis writes: “A girl in the Pacific islands wearing hardly any clothes and a Victorian lady completely covered in clothes might both be equally ‘modest’, proper, or decent, according to the standards of their own societies.”) But historic confessions, such as the Westminster, have listed immodesty as a breaking of the commandment against adultery. The traditional Christian understanding has been that modesty is a matter of sexual purity and not just a “social rule” (as this book claims on p.21).
Second, is the fact that Paul speaks against braids in I Timothy 2. This is likened to wearing a French braid, which few people today would say is immodest, with the conclusion that what is modest changes from culture to culture. But that is not an accurate comparison. William Hendriksen in his commentary on this passage writes, "But what about these braids which were popular in the world of Paul's day? No expense was spared to make them dazzling….The braids were fastened by jewelled tortoise-shell combs, or by pins of ivory or silver….Braids, in those days, often represented fortunes. They were articles of luxury! The Christian woman is warned not to indulge in such extravagance.” Furthermore, even if what is immodest in regards to extravagance may change from culture to culture, it does not follow that what is immodest in regards to revealing certain parts of our body is equally flexible.
Certainly the relationship between modesty and culture is tricky. I believe Biblical principles would point to clear implications in our dress were our minds not darkened by sin and by our culture, therefore looking to culture for our answers will just further darken our minds. A better solution is to seek to have our minds renewed by Biblical teaching on modesty and purity and prayerfully arrive at our convictions. Then, if our culture expects more than we believe God expects, we should be willing to live by its higher standards, but we should not lower our standards. And as we live faithfully by the light God has given us, willing to endure the ridicule of the world when necessary but never seeking it out unnecessarily, we have warrant to believe that God will give us more light to better understand what is modest and immodest.
This book also does a poor job of expounding the two main texts on modesty in the Bible (I Timothy 2:9 and I Peter 3:3). It says of the I Timothy passage that it "doesn't add much to the English dictionary definition." But that passage uses three different words (Greek: Kosmios, Aidos, Sophrosune, ESV: respectable, modesty, self-control) to show what a woman's dress should be and this book takes only a surface glance at one of the words (modesty). I’m not aware that the I Peter passage is mentioned anywhere.
The book reminds us of some good things, especially relating to the gospel, but I believe it undermines the very foundation of modesty. If modesty is about following our culture’s lead, then Christians today are doing a terrific job of being modest! This may be what many people want to hear, but I am convinced it is not the truth. I am afraid that many will be so won over by the emphasis on the gospel that they will not carefully evaluate the claims this book is making, but as Bereans we must do more than just make sure the word gospel is used lavishly before embracing a teaching.