Rockabilly Swimwear Style - The Retro Halter is a Rockabilly take on the classic Pin Up Halter style. The Retro Halter features a tie around the neck for sizing adjustment. This becoming swimwear style is perfect for the woman who likes to show off her assets in only the way a classic halter can provide, but wants a fun retro twist. This swimwear style has a vintage boy cut leg; soft cups are available for an additional $3.