Why Do Clothes Never Fit True to Size?
If you've ever ordered your "usual" size and had it fit completely wrong, you're not imagining it. There's no single, enforced standard for clothing sizes anywhere in the world, so a size 10 at one brand and a size 10 at another can be two different garments.
Here's what's actually going on.
There's no global sizing standard. Different countries and standards bodies have published their own guidelines over the years, but none of them are binding across the industry. Every brand ends up inventing its own scale.
Brands design for different bodies. A heritage retailer might still be working off a decades-old body measurement study. A fast-fashion label might be cutting for a younger, leaner frame. Neither is wrong, they're just building to different blueprints, and none of those blueprints is yours specifically.
Vanity sizing is real. Some brands quietly shrink the number on the label because a smaller size feels good to buy. Two garments can be nearly identical in actual measurements and still carry different numbers.
The chart ignores fabric. A "medium" in cotton and a "medium" in silk crepe can fit two different ways, because fit depends on how the fabric drapes and stretches, not just on the number on the tag.
The chart ignores cut. A relaxed shirt and a structured blazer labeled the same size will sit on your body completely differently, because the chart has no way to describe intentional ease or construction style.
None of this means you're hard to fit, or that you're doing something wrong. It means the size chart was built to move inventory efficiently, not to describe your actual body.
That's the deeper problem Fit Intelligence is built to solve, matching your real measurements to a garment's real measurements, instead of asking you to guess where you land on someone else's scale.


