Following the "Swinging London" era of the 1960s, a new group of cultural icons arose. The 1970s saw the emergence of the punk rock movement, built upon the wave of psychedelic and folk rock music introduced in the '60s. In the post-hippie era of the early '70s, rock 'n' roll had a new glam image, pioneered by outrageously dressed rockers like David Bowie and Marc Bolan. Soon other acts followed, most notably young performers like Siouxsie Sioux and groups like T.Rex and The Clash. The music of the '70s inspired fashion as well, in particular designer Vivienne Westwood, whose punk designs for the Sex Pistols helped define the decade's London style. Biography.com looks at the various icons who defined London in the '70s.