NEW YORK — The Eighties weren’t that long ago, were they? But with the stock market recently mirroring the flush, high-rolling mood of the past, the timing couldn’t be better for a campy Eighties fashion revival. Here, Polo Jeans Co.’s cotton sweater with Danskin’s cotton and Lycra spandex leggings and French Connection’s cotton and polyester pleather jacket with Hourglass’s polyester polkadot dress and hosiery by Look from London. For more, see pages 6 and 7.