"Harrow is a goth" "Harrow is a prep" "Harrow dresses alt" "Harrow would dress to fit in"
Harrow is the broke homeschooled kid from an isolationist cult that was let out on mission and/or bargained her way into attending a university so she could bring knowledge and funding back to the community. All her clothes are second-, third- or fourth-hand and have been patched and mended to hell and back and are not visually distinctive enough to identifiably belong to any subculture. The only exception to this lack of visual distinctiveness are her Church Robes, which are Church Robes. The only new clothing she owns is, like, underwear, maybe.
She is covered from neck to wrist and ankle because if anyone saw she had a human body under there she would gouge their eyes out. Most of her clothes are home-dyed black because she did it in the bathtub, and they must be black to show she is in permanent mourning. Also because then it's less likely people will notice she wears the same shirt and skirt for three days straight.
She does still have piercings (she is the only one on the Ninth mentioned to have piercings, I do not believe those are sacramental and are fully a Harrow Thing) because she can argue it's holy mortification of the flesh. Otherwise, thinking about what she is wearing is a distraction from more important things, which are a) being Righteous and b) proving she is the smartest person in the room.
Gideon dresses like a bogan


















