I would love to try and pull off a black velvet smoking jacket, or some of the more classic/victorian suits. However, I am a very difficult fit. My dimensions are 48" chest, 36" waist, 29.25" inseam. Athletic cuts only go down 10" from chest to waist. Even in the service, all my dress uniforms had to be tailored to fit, easily adding 50%+ to the cost.
Used clothing of the era rarely fits and it is the chest/shoulders that I nearly rip out.