What do mini, midi and maxi actually measure?
Mini, midi and maxi sound like measurements. They are not. Each one names a landmark on a leg: upper thigh, mid-calf, ankle. A brand calls a dress a midi because the hem landed mid-calf on the woman it was photographed on.
The garment itself has one length, and every person who buys that size receives the same centimetres of fabric. What changes is the leg it hangs against. On a shorter leg the same hem travels further down, and the name it was sold under stops being true.
This is why the model stat line exists on a product page. The shop is telling you which body the photograph was taken on, so you can work out the difference between that body and yours.
Where does a product page list the model's height?
Look directly under the product description, or inside a tab labelled fit and sizing. The line usually reads something close to: model is 178cm and wears a size S.
Two pieces of information, and you need both. The height tells you how far the hem will move. The size she is wearing tells you whether the drape in the photograph is honest, because a garment photographed a size small will look more fitted than the one that arrives.
Some shops publish neither. When a product page has no model stats and no garment length, the photograph tells you nothing checkable about where the hem will sit, and the only reliable move is to compare against something already in your wardrobe.
Check the shoes before you judge the hem. A model in a ten centimetre heel has been made ten centimetres taller for the length of that shot. A maxi that clears the floor in the photograph will drag on the same person in flat shoes, let alone on someone shorter.
How far does a hem move if you are shorter than the model?
Height difference between two adults is split between the torso and the legs. It does not all land in the leg, which is what makes the adjustment smaller than people expect.
A workable approximation is half. If you are ten centimetres shorter than the model, the hem of a dress will sit about five centimetres lower on your leg than it does in the photograph. Twenty centimetres shorter, and the hem moves about ten.
Five centimetres does not sound like much until you notice how narrow the calf is. The distance between mid-calf and the ankle bone is not a large stretch of leg, so five centimetres is often the whole difference between a midi and something that reads as a maxi.
Treat this as an approximation rather than a rule. People vary in how their height is distributed, and someone short in the leg with a long torso will see the hem move further than the halving suggests.
Where will a mini, midi or maxi land on you?
The five lengths below are the ones that appear most often in a product title, with the landmark each is aiming at and what tends to happen when the person wearing it is shorter than the person photographed.
| Hem name | The landmark it means | On a shorter leg |
|---|---|---|
| Mini | upper thigh, well above the knee | Sits higher on you than the photograph suggests, because the drop from the waist is fixed while your leg is shorter. |
| Above the knee | a hand's width above the kneecap | Often lands on the knee itself, which is the one place a hem tends to look unresolved. |
| Midi | mid-calf, between the knee and the ankle bone | Drops toward the ankle and reads as a maxi, which is the most common length complaint there is. |
| Maxi | ankle bone or below | Pools on the floor and needs a heel to be wearable, or a hem alteration. |
| Cropped trouser | a few centimetres above the ankle bone | Becomes a full-length trouser, and the deliberate gap of ankle the cut was designed around disappears. |
The cropped trouser is worth singling out. Its entire design is a deliberate gap of visible ankle, and that gap is what makes the shape work. Lose five centimetres of it and the trouser is not a longer cropped trouser, it is a full-length trouser that fits badly at the bottom.
Why is the garment length a better number than the model's height?
A model height only works after you compare her body to yours. A garment length works immediately, for anyone, with no arithmetic about leg proportions at all.
Many product pages publish one, usually as a line reading front length or total length, measured from the highest point of the shoulder down to the hem in the photographed size. When that number is there, use it and ignore the model.
To use it you need a target. Take a garment you already own whose hem lands where you want it, lay it flat, and measure from the shoulder seam to the hem. That single number is now your reference length for every dress you look at.
For trousers the equivalent is inside leg, measured on a pair that already fits, from the crotch seam straight down to the hem. Both numbers are worth writing down next to your bust, waist and hip, which the measuring chapter covers.
Does sizing down make a dress shorter?
This is the reflex, and it is the wrong tool. Adjacent sizes in a graded pattern differ in length by a small amount, commonly one to three centimetres, because most of what a grade rule adds goes into width rather than height.
So sizing down to shorten a dress buys you perhaps two centimetres of hem and costs you four centimetres around the bust, the waist and the hip at the same time. You have swapped a hem you can alter for a fit problem you largely cannot.
Buy the size your measurements point at. If the hem is still longer than you want, that is a hemming job, and it is one of the cheapest alterations there is on a simple garment.
The exception is a brand that publishes a genuine petite line. A petite pattern is redrawn rather than shrunk: the shoulder is narrower, the waist sits higher and the hem comes up, all together. That is a different garment rather than a smaller one, and buying it is a separate decision from picking a size.
Which other measurements change with height?
Hems get all the attention because they are the length you can see in the photograph. Three other measurements move with height and none of them are visible in a product shot.
Rise is the distance from the crotch seam up to the waistband on a pair of trousers. A high-rise trouser photographed on a long-torsoed model sits at her natural waist. On a shorter torso the same rise pushes the waistband above the natural waist, where it digs in and rolls over when you sit down. This is the one that gets misdiagnosed most often, because it feels like a width problem and it is a length problem.
Sleeve length is measured from the shoulder seam down to the cuff. On a shorter arm a sleeve that ends at the wrist in the photograph covers half the hand. That is easy to push up on a jumper and nearly impossible to live with on a tailored jacket, where the cuff is stiffened and holds its shape.
Shoulder width does not track height as closely as the other two, but it drifts with it. A jacket cut for a tall frame has a wider shoulder seam, and a shoulder seam that falls below the point of your shoulder is the single hardest thing on a garment to alter. Check it before anything else on structured pieces.
What is a fit model?
Brands develop a pattern on one person, called a fit model, and then grade it up and down from there. The fit model is usually somewhere in the middle of the range, commonly a UK 10 or 12 in womenswear.
The photographic model is often a different person in a smaller size. When a stat line names a size at the bottom of the range, you are seeing the grade at its most extreme distance from the pattern the brand actually developed, and the proportions in that photograph are the least representative of the middle sizes.
There is a second issue with sample photography. Shops sometimes clip a garment at the back so it sits cleanly on the model, and a clipped garment shows you a silhouette nobody receives. Look at the back view if the page has one. A garment that is smooth from the front and conspicuously absent from the back view has often been pinned.
None of this means the photograph is dishonest. It means the picture is showing you one specific garment on one specific body, and the stat line is the shop telling you which.
What if the model is shorter than you?
Less common on a product page, and it fails in the opposite direction with less warning.
A hem that reads as a comfortable midi on a 165cm model can arrive above your knee at 180cm. Nothing in the photograph hints at it, because the picture shows a length that looks entirely normal on the person in it.
Sleeves are the other place this shows. A sleeve that ends at the wrist in the photograph ends short of the wrist bone on a longer arm, and a jacket with a sleeve that is visibly short is difficult to wear no matter how well the shoulders sit.
Can Snagfit tell you how long a garment will be on you?
Snagfit reads the clothes in a photograph and describes them, then searches shopping listings for what it found. It can tell you the garment in your screenshot is a midi dress in a green floral print, and take you to shops selling that or the closest thing available.
It cannot tell you how many centimetres long that dress is. That number lives on the retailer's own product page, and checking it is the step that happens after Snagfit has done its part.
There is a useful habit here. When your screenshot came from a video of a person, you already know roughly how the hem sat on them. If they are around your height, the photograph is a better guide than any model stat line, because it is showing you the garment on a body close to yours.
What should you check before you order?
Find the model height and the size worn. If the page has neither, treat every length in the photograph as unverified.
Halve the difference in height. That is roughly how far the hem moves down your leg, and it is enough to change what the length is called.
Look for a published garment length. If it is there, it replaces all of the above, because it works without any comparison to the model at all.
Check the heel. Add it to her height before you do the arithmetic.
Size for your measurements, not for the hem. A hem is alterable. A bust is not.