Mapps has a huge set of freebies, with a variety of cloth materials and a lot of other useful stuff. Check the Poser freebies here. Rather than the full Spandex morph on the Daz figures, I'd be inclined to use a displacement map. Use the Chest Spandex and Hip Spandex morphs, but there's no option for shorter sleeves or a different neckline in the morphs.