I did some screencapping of the Sakamama’s dresses. (the back side of their dresses/full length since they don’t seem to have any refs from the game) To those who need references of them and also for cosplayers. Screencapped from Episode 6 (Christa) and 7 (Beatrix and Cordelia). Hope this helps! <3
Christa has a very long dress and cape..while Beatrix has frills on the bottom of her dress and her collar. Cordelia seems to have a little ribbon attached to her netted glove too. She also has the net design on the back of her dress.