Ghastly's Japanese Swimsuits (Genesis 1) are a set of two one-piece swimsuits for Genesis, in the style used by Japanese schools in the second half of the 20th century. The style is known in North America because of its use in various anime and manga series.
The swimsuits were made by Ghastly, and are available at ShareCG and Renderosity. They are licensed for commercial or non-commercial use. They are usable in Daz Studio 4.5 or higher as-is, or in Poser with the DSON Importer for Poser.