Typically, fedora brims are 2.5 inches or longer, whereas pork pie brims are less than 2.5 inches. Brim shape: Pork pies typically feature snap brims (named because they can be snapped up or down) that point up around the entire circumference of the hat, whereas fedora brims can be shaped in many different ways.
What is a stingy brim?
A “stingy” fedora has a smaller brim, less than two inches in length, while a wide brimmed or “generous” fedora will have a brim at least two inches in length, and ranging upwards from there.