Ever since hitting screens in 1995, Clueless has reigned as one of the most inspirational fashion films of all time. From Cher’s sunny yellow plaid Jean Paul Gaultier skirt suit to her sleek, fitted red Alaïa dress, every outfit defined a teen who revered fashion as much as her friendships. Add to that BFF Dionne’s legendary head-to-toe looks and a few magical makeovers, and Clueless was cemented as a classic film with incredible clothes at its core.

Celebrate the movie’s thirtieth anniversary with costume designer Mona May, who—alongside fashion writer Monica Corcoran Harel—shares her creative process and her collaboration with actors to make every character come alive. Step inside May’s design studio and fitting room to hear how she conceptualizes costumes from silhouette to ensemble. Whether thrifting through Los Angeles or pulling straight from the runways of Paris, May reveals how she selected and sourced high and low pieces for all your favorite characters including Cher, Tai, Dionne, Amber, and Christian.

Featuring behind-the-scenes photos, production stills, and intimate chats with key cast and creatives such as Alicia Silverstone and director Amy Heckerling, this book explores how personal style reveals a persona—and includes tips for creating your own main character looks. This compelling and stylish book is perfect for fans of pop culture, fashion, design, and art and is a record of the enduring cultural impact of the film.