I've always been curious why some Renaissance paintings depict nude subjects, while some depict clothes ones.
Was it a matter of style choice by the painter?
Did it depend on the intended "message" meant to be conveyed by the painting?
Did certain painters gain a reputations for either preferring or avoiding nude subjects?
It was probably more about who the employer was. Clergy was often less than euphoric by displays of nudity. They often even hired other painters to "dress" the people in the paintings they considered too explicit.
You can read more on that topic here.