Small knit sweaters, meaning the stitch size, not hte whole sweater size, like cashmere, are klingy, form fitting. If the sweater is the crocheted type there are holes inbetween the stitches. Who knows, but weren't cashmere sweaters and poodle skirts a really big deal in the fifties, early sixties? Don't you think you know why? And the gals weren't braless then.