Past installments of "Fat, Frugal, and Stylish" can be found here. It's cold, y'all. It is so cold that I am too cold to make hyperbolic jokes about how cold it is as an easy way to open a column. It is, certainly, too cold for fashion. There is no way to look sexy in this kind of weather.  Ideally we would just all be walking around wrapped in every blanket we own, with…