A photograph of a dress shows what it looked like once, on one body, in one light. It cannot say whether the bust is tight on a different body, whether a seam pulls when the cloth is heavier, or whether a check lands where the designer drew it. To answer those questions before a metre of cloth is cut, the garment has to be represented as what it is: a body, a pattern, a fabric and the way they settle together, each held as a measurement.
Why the garment needs an exact record now
The pressure is regulatory as well as commercial. The European Union's Ecodesign for Sustainable Products Regulation entered into force on 19 July 2024. On 16 April 2025 the Commission adopted its working plan for 2025 to 2030, naming textiles, with a focus on apparel, among the first priority product groups for ecodesign rules. Those rules will set what information products must carry, including whether a Digital Product Passport applies and what it holds.
The regulation already bites in one place. Since 19 July 2026, large companies have been barred from destroying unsold apparel, clothing accessories and footwear, with medium-sized companies expected to follow in 2030. Every garment made that does not fit, does not sell or does not suit now has to find a use other than destruction. The cheapest garment to deal with is the one that was judged correctly before it was made.
That makes the record of a garment, what it is made of and how it fits, more than a design convenience. It becomes the thing the garment is answerable for.
Start with the body
Fit is a relation between cloth and a body, so the body comes first and has to be exact. In a case study with a fashion house, Livgens Render built a body fitted to four measurements, height, bust, waist and hip, to within a tenth of a centimetre.
That precision matters because ease, the gap between garment and body, is measured in centimetres. A body that is off by two centimetres at the hip makes every fit reading at the hip meaningless. Livgens's Bodies work, shared by Health and Render, covers your own measurements and bodies fitted to any size.
Then the pattern
A pattern is the flat geometry the garment is cut from, and it is where the design becomes a set of numbers. Render drafted a parametric pattern for that body, with the ease the design asks for. A parametric pattern is drafted from the body's measurements, so the same design can be drafted again for another body and stay true to its intent.
The fabric, and the drape
Cloth is where garments become physics. The same pattern in a crisp poplin and a fluid jersey are two different garments. Render sews the pattern and drapes the cloth on the GPU, running it until the cloth comes to rest on the body. The site's Materials line puts it simply: how a fabric drapes and fits on a measured body, before it is cut.
Speed decides whether this is used in a fitting or only after it. In the case study, a shirt draped in 34 seconds instead of 208, six times faster than on the CPU, with the fit reading the same: 6.1 cm of ease at the bust on the GPU against 6.5 cm on the CPU. A dress settles in 65 to 75 seconds. The same body, garment and fabric come back in 1.1 seconds instead of 47, so a fitting can move at the pace of the conversation.
Fit as numbers
A drape that only looks right is a picture. A drape that can be read is a measurement. Render reads ease at bust, waist and hip, and the stretch along every seam, off the draped garment, so a tight bust or a pulling seam shows as a number.
This is where representation pays. A fit comment such as "a little tight across the bust" becomes a value that can be compared across sizes, fabrics and revisions, and a pulling seam can be found before a sample is sewn.
Print and weave at true scale
Pattern and cloth meet a third element: the surface. A check or a stripe has a repeat, and that repeat lands on the body at a real size. Render lays prints and weaves at their real repeat, so a stripe or a check reads at the scale it will be on the body. A check is the size it will be cut.
One garment, every view
A garment is judged by people in different places: a designer at a desk, a buyer elsewhere, a client on a phone. Render shows the same garment in the browser, in a ray-traced still and streamed live from Unreal Engine, with the fabric at its true scale and nothing to install. All three draw one draped garment, so what is judged is what was simulated. The same settled dress can be placed in another place and another light, and the garment does not change, only where it is seen.
Said plainly: real cloth comes next
The most important line in the case study is its limit. No fabric has been measured on a bench yet, so every drape is shown as unvalidated until it is scored against real cloth.
That is the honest state of the work, and it is the right way to carry it. A drape is a prediction about a material. Until that material has been measured, the prediction carries its status with it. The next steps listed are fabrics measured on the bench with every drape scored against them, garments that move with the body and not only at rest, the garment in a street, a garden and a forest under their own light, and garments settled cleanly on lifelike digital humans, as they are on the standard bodies today.
The record that travels with the garment
Seen together, these are the parts of an exact garment: a measured body, a parametric pattern, a fabric, a settled drape, fit read as numbers, a surface at true scale, and one shared view of it all. The same discipline runs through Livgens generally: every thing carries its measurements and the range they hold for, and in Render every file keeps the call that made it, so what was asked and what was done stay together and any step can be traced and undone.
That is the kind of record an industry facing product passports and a ban on destroying unsold stock will need: what the garment is, how it fits, and how sure anyone can be.
Where Livgens fits
Livgens represents the thing exactly, in sound, light, matter and motion, and Living Worlds runs it forward through its lifecycle. Livgens Render builds in 3D and runs it before it is real, driving Blender, Unreal Engine, FreeCAD, KiCad and RealityScan from one conversation, and is in early access. The garment is only the start of its life: Living Worlds runs the lives around a product forward, the households that buy, what they want and how that changes over the years, and the fit read from the drape is a measured input those simulations can use. They are held to the rule every Living Worlds result is held to: registered before the data is read, scored once, and shown as unvalidated until then.
