Characteristics of preppy individuals include a particular subcultural speech, vocabulary, dress, mannerisms and etiquette reflective of an upper class and old money upbringing.
Lisa Birnbach's 1980 book The Official Preppy Handbook was written to poke fun at the rich lives of privileged Ivy League and socially elite liberal arts college students.
Press and Brooks Brothers both had stores on Ivy League school campuses, including Harvard, Princeton, Columbia, Yale, and Penn.
Distinctly preppy fashions then emerged as a still-more-casual, youthful interpretation of Ivy League style (rugby shirt, boat shoes, etc.).
"[5] By the 1980s, mass marketing of brands such as Ralph Lauren, Lacoste, Daniel Cremieux, and Izod brought a resurgence of Ivy and preppy styles and moved them into the mainstream.
Such clothing often includes elements drawn from typical preppy styles, such as nautical stripes, pastel colours, or equestrian details.