Here's a helpful link from C.J.'s blog, where you will find a PDF containing his chapter on modesty for the forthcoming book he edited, entitled Worldliness: Resisting the Seduction of a Fallen World (foreword by John Piper). The link above also includes a discussion guide on the chapter, as well as a limited-time coupon to pre-order the book for 35% off.
HT:Justin Taylor