I copied this post from Naturlaut on the Moden Men's forum. I never knew any of this, and thought that maybe some others on here didn't as well... "For size 38 regular: NM model measures 42" chest, Saks 41", Bergdorf 40", which is almost the same as some European models. This is the most significant different. Shoulders also measured differently, again with Neiman having the widest shoulder with the lowest slope, not to mention button stance, which change from season to season. Brioni suits made for Neiman Marcus are cut a little bigger, with some even in single vent (there is one pin-stripe at NM right now that is such); Brioni at Bergdorf are made slimmer, while Brioni at Saks is in-between. "