Sizing science
built into
your browser.
Ask Ella, your fitting room for the entire internet. Set up your fit profile, and she names your true size for any brand, anytime you need.
The plugin
Install once.
Shop everywhere.
Add Ella to your browser in under one minute. From that point on, activate here on any product page in one click. Try it in the demo! She reads the garment, including fabric, cut, brand sizing history, and cross-references your digital twin to surface your size, right where you need it.
Launching soon, be ready →How it works
Three steps to
smarter sizing.
01 — Answer
A few simple questions.
Height, weight, and how you like things to fit. No tape measure, no guesswork. It takes seconds, and you only do it once.
02 — Match
Ella builds your twin.
Your answers map to a digital twin, a model of your body measurements.
03 — Shop
Your size. Every site.
Ella reads each garment's cut and fabric, then tells you your size before you add to cart. She travels with you across every brand and sharpens with every shop.
The science
A digital twin built from thousands of real bodies.
Ella runs on anthropometrics, the science of human measurement. Beneath the surface is a body model trained on thousands of real profiles and mapped across dozens of dimensions, placing you within a high-dimensional model of human shape.
Clothes obey physics: fabric stretches, drapes, and resists in measurable ways. Ella pairs that material behaviour with your true proportions to find where cloth meets contour, simulating how each garment's cut and cloth will fall against your twin and returning the size the geometry actually supports.
Become a partner brand, drive conversion and reduce returns →Sizing backed by body science.
Accuracy that compounds over time.
Register below for first access!