Long skirts -- not dresses but skirts.

Drogo Nazhur

For G3F ... unless some already exist ;)

caravelle

Ghost Bride Dress http://www.daz3d.com/ghost-bride-dress-for-genesis-3-female-s has a separate long skirt , also Viking Opera Singer http://www.daz3d.com/viking-opera-singer-for-genesis-3-female-s. Corset Dress Outfit has a (separate) long tight skirt http://www.daz3d.com/corset-dress-outfit-for-genesis-3-female-s

nicstt

If the material zones are set up suitably, you can turn the top part to zero opacity; gives a skirt-like look

 

cherpenbeck

This as well: http://www.daz3d.com/vagabond-for-genesis-3-females