"She appears as an ethereal flowing shroud with the suggestion of a shapely female body underneath. It is said that Pale Night's true form is so hideous and terrifying that reality itself rejects it. The shroud that she "wears" hides it. To glimpse Pale Night's true form is risking madness and death"
Saw the description of this demon lady on Wikipedia. It was an idea so beautiful I just had to make a concept of it.