Glam rock, the music made wildly popular in the early ’70s by bands like Roxy Music, T. Rex, and David Bowie, was a mix of straightforward rock & roll with bubblegum melodies and outrageous, gender-bending lyrics. But glam was an attitude as much as a sound—to be glam, you had to be wry, brash, and above all, a star. The look took the era’s hot-pants-and-glitter and dressed it up with campy theatricality and sci-fi futurism. The result was a sort of androgynous junk shop glamour the world had never seen before: boys in glittery makeup and corkscrew hair, candy-colored furs and smudged lipstick, all teetering atop a pair of six-inch platform boots. Here, a guide to becoming a Dandy in the Underworld: