Lucy, because Lucy does that sort of thing, hacks her hair off until it's shorter than Edmund and she looks like a boy, as if their family has two brothers instead of one, and Susan lets her long black hair be her one extravagance and does elaborate things with it, the sort of things Peta has no patience for. More than once, she tries Lucy's route, but her hair grows back faster than her sister's ever does, so Peta takes to braiding it, putting it up, whatever she can do to keep it out of her way. When it reaches her waist, despite her best attempts, she gives up, and pins the long golden braid in a crown around her head, settling her own crown around it.