There isn't much information regarding this on SF, or anywhere else so I decided to start this thread. I've come to understand that a muslin fitting isn't the 'standard' way of making a bespoke suit, except in certain circumstances like 'very difficult to fit customers', very expensive cloth etc. 1. Question, for a suits 'muslin fitting' - should the test material be similar to the cloths properties - the way it drapes, or its weight or weave (if yes, then which of these properties (or other not listed) is most important), or it does not matter and one can use any cotton muslin. 2. Why is a muslin fitting not practised, since to my knowledge it would be easier to cut, sew together and make adjustments compared to even a baste fitting? In fact it seems it would take less time overall since the tailor can pretty much sew straight to a forward or final (fin bar fin) fitting. Thoughts (as always from cutters/tailors especially) are much appreciated.