As the United Kindom is hit by a very wet stormy day, I've found this set of pictures of someone who looks ready for the weather.
Many so-called cowboy hats are all basically the same shaped hat until the crown is dented, this one has 2 parallel dents and a relatively flat top, this makes cattleman style, at least according to one website.
This isn't a good quality cowboy hat and wouldn't survive the real world, but OK for fancy dress and LRP
Worn alongside a full-length brown waxed coat.