The Bottom Edge Never Lies: How to Read a Secondhand Hem Before You Pay

Most secondhand shoppers have a routine. Check the label. Sniff the armpit. Hold the shoulders up to the light. All sensible. But there is one part of a garment that quietly answers more questions than any care label: the hem. It is the bottom edge, the bit that meets pavements, puddles and the back of your heels. And in a UK charity shop or at a damp Saturday car boot, it is also the bit that tells you whether a find is genuinely old, badly altered, or simply on its last legs.

A hem is not just a finished edge. It is a record of how long the garment was, how much fabric was allowed for letting down, how carefully it was made, and how hard it has been worn. In 2026, with vintage resale prices still climbing and “one-of-a-kind” used as a licence to charge silly money, a two-minute hem check is some of the cheapest insurance you can get.

Start with depth, not drama

Turn the garment inside out and find the hem allowance — the flap of fabric folded up behind the stitching. Depth matters. A deep hem, roughly the width of four or five fingers, usually points to an older garment or a better-made one. Manufacturers once left generous allowances so clothes could be let down for a growing teenager or a change in fashion. A narrow hem, sometimes barely a centimetre, often signals modern cost-cutting: less fabric, faster sewing, no intention of adjustment.

That is a rule of thumb, not a law. A deep hem on a 1970s wool skirt is common; a deep hem on a cheap modern dress can simply mean the factory had a wide folding attachment. Use depth as a prompt to look closer, not as a verdict on its own.

The ghost crease is the giveaway

Look above the current stitching line. If you see a faint crease, a row of tiny needle marks, a band of slightly faded fabric or a line where the colour has worn differently, the hem has probably been moved. That ghost crease is the original fold line. It tells you the garment used to be longer — or, occasionally, that it was taken up and then let back down again.

On trousers, this is gold. A pair with a clear original crease well below the current hem has been shortened, often in a hurry. On a coat or a heavy skirt, the same mark can reveal that a previous owner was taller, shorter, or simply following a different fashion. None of this is automatically bad. It is information. The question is whether the alteration was done well and whether the remaining hem allowance is deep enough to work with.

Stitching tells you who made it and who mended it

A hand-sewn hem is not automatically better, but on older wool tailoring it often is. Look for small, even, almost invisible stitches on the inside. A machine blind stitch — the kind that creates a tiny zigzag you can barely see from the outside — became common on mid-century dresses and skirts. A chain-stitch hem on denim is a useful dating clue, especially on jeans. An overlocked edge on a knit hem is normal, but a raw, unravelling overlock is not.

Then look at the thread. If the hem thread is a different shade from the rest of the stitching, someone has re-hemmed it. That is not a dealbreaker. A neat repair in a matching-ish thread is honest. A wobbly line in cheap polyester thread on a wool coat is a warning that the job was rushed, and that the hem may drop again after one damp walk to the bus stop.

Wear at the bottom is wear everywhere else

Hems live hard. The back of a trouser leg drags. The corner of a skirt catches on stairs. A long coat hem collects mud, salt and rain. So look for fraying, thinning, felting, or a stiff, crunchy feel where the fabric has been wet and dried repeatedly. Check the back hem first, then the corners. If the hem is worn through, the lining may be gone too, and the repair will cost more than the garment is worth.

A dirty hem is not always a disaster. Sometimes it is surface grime that will wash out. But heavy abrasion — where the fabric has actually lost its surface — will not come back. And on a winter coat, a hem that has been dragging is a sign the whole garment may have been worn long and hard.

Repairs can be honest, invisible or hiding something

Turn the hem up and look inside. Iron-on hem tape is common, cheap and usually a bad sign in a secondhand garment. It fails in the wash and lifts in damp weather. A deep tuck stitched into the hem can hide a stain, a tear or a worn patch. Sometimes that is a clever fix; sometimes it is a cover-up. If the fabric feels stiff or bumpy under the hem, ask why.

A hem that has been let down and re-stitched can leave a visible line, but it can also give you extra length. That is worth knowing if you are tall, or if you want a longer skirt without hunting for a different size. Just check that the newly exposed fabric has not faded differently from the rest of the garment. On sun-faded vintage, a let-down hem can leave a bright stripe around your ankles.

The five-minute hem checklist

Use this in a charity shop fitting room, at a vintage fair or on a car boot table when the seller is watching.

• Turn the garment inside out and find the hem allowance.
• Measure the depth roughly with your fingers. Deep is interesting; narrow is not automatically modern.
• Look for a ghost crease, needle marks or a fade line above the stitching.
• Check the thread colour and stitch type. Mismatched thread means a re-hem.
• Run your fingers along the edge. Fraying, stiffness or iron-on tape are warning signs.
• Hold the hem up to the light. Thin, see-through patches mean wear.
• Check the lining hem separately on coats and jackets.
• Look at the back and corners for dragging and abrasion.
• Ask what a repair would cost before you fall in love.

When a bad hem is a bargain — and when it is a trap

A loose hem stitch is a five-minute fix. A slightly uneven re-hem on a skirt you love is worth living with. A deep hem that can be let down is a bonus. But a hem that has been cut too short cannot be fixed without adding fabric, and a hem that is distorted, puckered or worn through is usually a walk-away. In 2026, with alteration costs rising, the hem is also a way to price a garment honestly. If the fix costs more than the find, it is not a bargain.

The bottom edge is not glamorous. It will never sell a rail of clothes the way a label can. But it is the part of a secondhand garment that has been closest to the ground, closest to the weather, and closest to the truth. Give it a look before you pay.