People have been doing this long before GLP-1s since clothes sizing is so opaque. Clothes drop-shipped from China often fit ludicrously small but American brands fit ludicrously large. Product reviews now have metadata for the fit: "True to size"/"Fits small"/"Fits large". And increasing tolerances for clothes, to achieve faster production, means that the same item in the same size can fit completely differently.
If I can try on and buy something in a store, I will do so.
sameers•38m ago