I know it’s vague and I don't expect anyone to know this, but I had a friend who owned a fantasy book with seven white haired women on the cover. I think each woman had their own brief story chapter, as it was a very thick book.
Unfortunately I don’t know who wrote it, the title or remember what it's about. I'm bothered that I can’t find this book by Googling it either, possibly because it's an older (maybe mid to end of 90's to early 2000's) book.
The few things I do remember is one of the women was a knight of sorts, one was a ghost. I think one also might have been a sorceress. I know I'd know it by its cover.