Bracketing Oxford Shirts: The Collar Gap Test
Button the top button. If your finger slides between the collar and your neck with room to spare, the shirt is a size too big. If you cannot get the button closed at all, it is a size too small. Everything else about an oxford shirt is negotiable. The collar is not.
Why the collar decides and the chest does not
Oxford cloth is stiff. It holds its shape, which is the point of it, and that stiffness means a bad collar shows immediately. A collar that gaps at the front pulls the whole shirt off balance: the placket bows, the shoulders sit wrong, and the shirt looks untucked even when it is tucked in. A collar that chokes is worse, because you will unbutton it by lunch and never button it again.
The chest measurement on the size chart cannot tell you any of this. Chest sizes run in two-inch jumps, and most men fall between them. The collar runs in half-inch jumps, which is why it is the finer instrument. Two shirts with the same chest size can have collars half an inch apart, and half an inch at the neck is the difference between a shirt that looks pressed and one that looks borrowed.
Size and fit drive most apparel returns. Coresight Research put the US online apparel return rate at 24.4 percent, with size and fit the top reason at 53 percent of returns. The collar gap is the most common version of that failure in a shirt, and it is the easiest to test before the return window closes.
Two shirts, one button test
Order your usual size and one size up, same colour. Button every button on each shirt, top to bottom, and stand in front of the mirror. On the smaller size, slide two fingers between the collar and your neck. They should fit snugly, with no room for a third. If one finger barely fits, the collar will choke you by the afternoon. If three fingers slide in easily, the collar will gap the moment you move.
Now sit down in each one. A shirt that fits standing and pulls at the collar seated is a shirt that fails at a desk, which is where most oxfords live. Check the shoulder seam while you are at it: it should sit at the edge of the shoulder bone, the same test that decides whether tailored trousers fit at the rise. Then roll the sleeves to the elbow and look at the cuff. A cuff that swallows the wrist on the larger size is telling you the smaller size is the keeper, even if the collar feels snug at first.
Oxford cloth shrinks, and the bracket accounts for it
Oxford is cotton, and cotton shrinks on the first wash. A shirt that fits perfectly out of the packet will fit differently after one hot wash, usually a little tighter at the collar and a little shorter in the sleeve. Cotton T-shirts have the same problem, and the first wash decides the size there too. With an oxford, the collar is the place shrinkage shows first, because there is no give in the band.
That is the argument for keeping the size with the slightly looser collar when the test is close. A collar with room for two fingers will still fit after the first wash. A collar that barely closes will not. Wash the keeper once before you decide for good, and if the collar tightens past the two-finger test, exchange it while the return window is still open. Silk blouses need the same hour-long verdict: judge the size after wearing it, not in the first minute.
Frequently asked questions
How much collar gap is too much?
If you can fit three fingers between the buttoned collar and your neck, the gap is too big. Two fingers is the fit. One finger means the collar will feel tight by the afternoon, and it will only get tighter after the first wash.
Should I size up for a tucked-in oxford?
No. Tucking does not change the collar, and sizing up for the tuck gives you a collar that gaps. Buy for the collar and the shoulders, and let the shirt length handle the tuck. Most oxfords are cut long enough to stay tucked at your true size.
Does oxford cloth shrink in the wash?
Yes, cotton oxford shrinks, mostly on the first wash and mostly at the collar and cuffs. Wash cold and hang dry to keep it minimal. If the collar is borderline tight out of the packet, it will be too tight after washing, so keep the looser of the two sizes when the test is close.
What if the collar fits but the body is too big?
Keep it. The collar is the part you cannot fix, and the body is the part a tailor can take in cheaply. A shirt with the right collar and a slightly full body looks better than a shirt with a tight collar and a perfect body, because nobody sees the body and everyone sees the collar.