Butterick 5487, 1970s Misses' Bikini and Swimsuit. Halter bias bikini top, has V neckline, attached self ties, elasticized edges, self knot trim, and lingerie hook closing. Bikini bottoms, gathered at front into forward side seams has elasticized edges and lined crotch. Bias one-piece swimsuit has V neckline, under bust seaming, attached self straps crossing in back, lingerie hook closings, elasticized edges, lined crotch and self knot trim.