The New Wave of the Preppy Fashion Trend

In 1982, Lisa Birnbach’s “Preppy Handbook” codified the look and lifestyle of prep from Lilly Pulitzer to Lacoste to L.L. Bean, selling more than 2.3 million copies.

Many of the book’s sartorial secrets have stood the test of time, which is the point, including Sperry Top-Siders, khakis and Bermuda bags.

But a new wave of prep is also taking over the runways and the streets, with designers twisting the old standards for a…