2. Stand naturally at the fittings. Sometimes guys throw their shoulders back and stand overly erect when in front of a mirror. If you do this, the coat will end up being fitted for a different posture.
This has been on my mind as I'm planning a new suit soon. This advice makes perfect sense, i.e. don't stand unnaturally. However like many desk workers my 'natural' posture is awful, I.e. rounded shoulders, forward head and pelvic tilt.
I know how to consciously correct this into good posture, and typically do this when I remember to, but often forget when preoccupied or distracted.
So when commissioning clothes, it strikes me that I'd rather have it cut for me standing correctly rather than standing with bad posture as this gives me more incentive to stand correctly as otherwise the collar/shoulders won't sit right.
Having it cut to match my bad posture seems like resigning myself to having a banana spine for the remainder of my time with the new suit.