Fit is the only thing that matters

The eye reads fit before it reads anything else, and it reads it at a distance, before cloth or colour or label can intervene. A collar standing away from the neck registers as an error in about a second. This is why a plain jacket adjusted properly outperforms an expensive one left as it came, and why the alteration budget is the most underspent line in most wardrobes.

The hierarchy is simple enough to state. Fit is read first because it describes the relationship between the garment and a body the viewer is already looking at. Cloth is read second, and only at close range. Everything else, the label included, is read last or not at all. A well made jacket worn a size too large does not read as expensive and careless. It reads as borrowed. What follows from this is a reallocation of money rather than an increase in it. A jacket bought at a moderate price and given three hundred euros of alteration will outperform a jacket at twice the price worn as bought, provided the shoulders were right on the day of purchase. The alterations that repay the money are the ones nobody notices afterwards: the sleeve shortened from the head rather than the cuff where the buttons demand it, the waist suppressed to follow the actual shape of the back, the trouser leg tapered from the knee down so the line falls clean over the shoe. The sequence matters as much as the list. Body before sleeves, because taking in the waist changes where the sleeve wants to hang. Length last, because it is measured against the finished balance of the coat. A tailor working out of order will produce a garment that fits at every individual point and hangs wrong overall, which is a common and avoidable outcome, and one reason to pay for a fitting rather than a drop off.

The harder conversation is about what cannot be done. Customers arrive expecting that money solves geometry, and in tailoring it frequently does not, because some dimensions are fixed by the way the garment was assembled before it ever reached a shop floor.

The shoulder is the first refusal. Narrowing or widening it means opening the top of the coat, recutting the armhole, reshaping the canvas and resetting both sleeves, and the price of doing it properly exceeds the value of most garments. Even done well, the collar and lapel rarely sit as they did. The honest advice is to leave the jacket on the rail. A shoulder that is wrong is wrong permanently, and no amount of skilled work downstream compensates for it. The second refusal is letting out where there is nothing to let out. This surprises people most, because it seems to contradict the price they paid. A seam trimmed and overlocked at eight millimetres has no reserve inside it. Trousers are the frequent casualty: a modern waistband often carries a token allowance at the centre back seam and nothing at the side seams, so two centimetres is the realistic limit rather than the four or five the customer needs. A skirt cut on the bias cannot be taken in at the waist without disturbing the hang of the whole panel. The third is rise, in trousers, and the closely related problem of balance in a coat. Both are set by the pattern and both determine whether a garment sits on the body or fights it. Neither can be adjusted by more than a small margin. What this means in practice is that the fitting room decisions worth agonising over are the ones about shoulders, rise and the presence of inlay, and everything else can be settled later by somebody competent with an iron and an hour.