London — The song is over but the memory fumphas on. Almost ten years after "Swinging London" happened, the city's Fashion Image has become a parody of itself. In the early sixties (oh god, it's beginning to sound like a broken record but it's such history now) Mary Quant, Biba et all made cheap little micro-mini dresses for English dolly girls, Twiggy was hot, and the King's Road boutiques grew into multimillion dollar empires. Now Mary — who designs everything from bras called "booby trap"" to "health" cosmetics, has put together a retrospective of the past decade for the British Museum, no less. This exhibit will feature miniskirts, Vidal Sasoon 'hairdos, white plastic go-go boots, and Beatles and Stones records... right alongside the Egyptology and the Leonardo Da Vinci sketches that are housed in that hallowed institution. That really just about says it all — but there's more.