Does This Brand Run Small, Large, or True to Size?

The technical reality:

There is no global sizing standard. Brands independently decide their fit profiles.

Some brands (like Zara or Reformation) are known for running small, while others (like Nike or H&M) can run larger than expected. Even within a brand, vanity sizing and target demographics affect sizing (e.g., teenage-focused brands often fit smaller).

How Tellar helps:

At Tellar.co.uk, we combine your real body measurements with our database of 1500+ brands and their known fit tendencies.

Instead of guessing, Tellar shows if you need to size up, down, or stay true to size based on real data, not assumptions — for free and in real-time.