Come on, glam!

Glam rock (less commonly glitter rock), a style of rock music popularized in the 1970s, was mostly a British phenomenon and confined to larger cities in the U.S., such as New York and Los Angeles. It was distinguished by the costumes and stage acts of the performers rather than any particular aspect of their music. The emphasis was on superficiality and an unabashed embracing of decadence, fame, and sexuality, a statement of sorts against such acts as Pink Floyd, King Crimson, Yes and Genesis, whose music was often referred to by critics as art rock.
Glam performers often dressed androgynously in make up and glittery, outrageous costumes, not dissimilar to costumes that Liberace or Elvis Presley wore when performing in cabaret. The most famous example is David Bowie during his Ziggy Stardust phase. Sexual ambiguity became a game; Bowie told the press he was bisexual simply for the publicity while the late Jobriath is thought really to have been rock's first openly gay star. But probably one of the most famous examples of a homosexual glam rocker is Freddie Mercury of Queen.
Although credit for starting the trend in Britain is often given to David Bowie, it was probably Roxy Music, headed by Bryan Ferry and Brian Eno, that led the wave. However, Roxy Music avoided the excesses of many of their imitators. Ferry wanted to give his young audience an excuse to dress up for concerts, or as he said "It would be like a night at the opera for them."
Some also credit Marc Bolan of T. Rex as the progenitor of glam rock. However, in 1968-69, Alice Cooper sketched the first hints of glam rock when they used a transvestite look and an overtly sexual attitude as part of their outrageousness. (Wikipedia)