A size 12 in one pair of jeans and a size 14 in the next is not a manufacturing error, and it is not you. Denim is one of the few things in a wardrobe where the number on the label tells you almost nothing about whether the jeans will actually work.
Three things decide that, and none of them appear on the tag: where the waistband sits, what the leg does below the knee, and where the hem finishes. Get those right and the size sorts itself out.
At a glance
- Rise, leg shape and hem length decide the fit; the size on the label barely does
- High rise holds the middle rather than cutting across it, and lengthens the leg
- Mid rise wins only if you are long through the torso
- Straight leg is the most forgiving shape and the one that dates slowest
- Hem to the shoes you will actually wear, not to an average of your shoes
- A mid to dark blue does the most work; beige is the pair people overlook
- Rise: where the waistband sits
- Leg shape, and what each one is for
- Length is the alteration worth paying for
- Colour, briefly
- Frequently asked questions
Rise: where the waistband sits
Rise is the distance from the crotch seam to the top of the waistband, and it is the decision that changes the most. A high rise sits at or just above the natural waist. A mid rise sits two or three inches below it.
High rise has been the default for some years now, and for good reason: it holds the middle rather than cutting across it, and it makes the leg look longer because the leg is measured from the waistband upward by the eye. It is also more comfortable to sit down in, which is the part nobody mentions.
The one situation where a mid rise wins is a longer body. If you are long through the torso, a very high waistband can sit at the ribs rather than the waist, and no amount of good cutting rescues that.
Leg shape, and what each one is actually for
Leg shape is usually chosen on how it looks on the hanger, which is the worst available method. What it is really doing is balancing your proportions against the shoe you intend to wear.
| Shape | What it does | Best with |
|---|---|---|
| Straight | Falls in a clean line from hip to hem without narrowing. The most forgiving shape and the one that dates the slowest. | Almost anything. A flat, a low boot or a trainer. |
| Wide leg | Adds volume below the knee, which balances a fuller hip and lengthens the whole line when the hem is long enough. | A shoe with a little height, or a clean leather trainer the hem can cover. |
| Slim | Follows the leg closely. Works best under a longer top or a coat, where it is the narrow half of the outfit. | An ankle boot or a slingback. |
| Cropped boot | Narrows at the knee then flares slightly, and finishes above the ankle. Deliberately shows the foot. | A slingback or a flat. Not a chunky trainer. |
If you only want one pair, take the straight leg. It is the shape that will still look right in four years, and it is the one that does not demand a particular shoe.
Length is the alteration worth paying for
More jeans are ruined by hem length than by anything else, and it is the cheapest thing on the list to fix. Where each shape wants to finish:
- Wide leg. Almost touching the floor at the back, measured in the shoe you will actually wear. An inch short and the shape collapses into something that looks borrowed.
- Straight leg. More forgiving. At the ankle bone or just below, and it will survive a change of shoe.
- Cropped. Above the ankle, on purpose. Leave it alone.
Buy for the shoe, not for the average of your shoes. If you live in flats, hem to flats.
Colour, briefly
A mid to dark blue does more work than anything else and will go on doing it. White denim is a summer piece that people assume stops in September, and it does not: with a knit over it in October it looks considered rather than out of season.
The one that gets overlooked is beige. It sits where a chino used to and reads as smarter than blue without the effort of a trouser, which makes it the pair that quietly gets worn to things.
The denim here is largely L'Agence, and the full jeans edit sits alongside the rest of the trousers.
Frequently asked questions
What does high rise mean in jeans?
Rise is the distance from the crotch seam to the top of the waistband. A high rise sits at or just above the natural waist, and a mid rise sits two or three inches lower. High rise holds the middle rather than cutting across it and makes the leg read as longer, which is why it has been the dominant shape for some years. The exception is a long torso, where a very high waistband can end up sitting at the ribs.
Which leg shape should I choose if I only buy one pair?
A straight leg in a mid to dark blue. It falls cleanly from hip to hem without narrowing, which makes it the most forgiving shape, and it does not demand a particular shoe the way a wide leg or a cropped boot cut does. It is also the shape that dates the slowest, so it will still look right in several years rather than several seasons.
How long should wide leg jeans be?
They should almost touch the floor at the back, measured with the shoe you will actually wear them with. An inch too short and the shape loses its line and starts to look like a mistake rather than a choice. This is the alteration most worth paying for, and it is worth hemming to one specific pair of shoes rather than to an average of the shoes you own.
Can I wear white jeans after summer?
Yes. White denim stops looking like a summer piece as soon as what you put on top of it is not a summer piece. A knit, a substantial blouse or a jacket over white jeans in October reads as deliberate. What dates it is a strappy top and a sandal, not the jeans themselves.
Why do I take different sizes in different jeans?
Because the size on the label describes very little about a pair of jeans. Rise, the shape of the block through the hip and the amount of stretch in the fabric all move between styles within the same brand, let alone between brands. It is normal to take two different sizes in two cuts from the same house. Fit the rise and the leg shape first, then find the size that goes with them.
Written by No19 Boutique
No19 Boutique curates European designer womenswear from 19 Westbourne Arcade in Bournemouth, chosen for quality, cut and considered design. The team knows the brands properly and will tell you honestly what suits you, in store and online across the UK.