This is a very simple costume and I'm kinda happy with it. Though I may remake the skirt.
The top is 4-way stretch Halloween fabric and polyester. It is my own pattern.
The glovelets are my own thing as well.
The cape acts more like a shawl with the way I did it, and I quite like how it is. The black is hand done.
The skirt is suiting. It will likely be redone.
The tentacles are made of satin. I sewed the sash normally and to make the heads of the tentacles, I sewed balls and stuffed them. The faces were drawn on using Copic Markers. The little wings on the one are foam sandwiched inside the satin and hand sewn on.
This is completely my own interpretation and idea.
And yes, the wig is my Sephiroth one.
Currently, the only photos I have are the test shots.