Costume design for Avalon in her formal/ritual/day to day life on Earth outfit. She'll eventually have separate 'casual' and 'torturing souls of the damned' outfits (Because it's so hard to take the bloodstains out of white!)

But during her character arcs, this is what she can be assumed to look like. More or less. I'm not sure how much I like the gray upper jacket, so that might get a recolor eventually.