Uniqlo to Lorna Jane leggings size
The short answer
Uniqlo XS is Lorna Jane XXS by the two brands' own charts. 6 of 7 Uniqlo sizes land on a different label at Lorna Jane.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
On 1 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.
| Uniqlo | Uniqlo builds it for | Lorna Jane, by chart | Same label | Lorna Jane builds it for | Lorna Jane also prints |
|---|---|---|---|---|---|
| XXS | waist 22.5 to 24.8 in, hip 32.8 to 35 in | XXS | XXS | waist 25.6 in, hip 31.5 in | US numeric 2 |
| XS | waist 24 to 26.5 in, hip 34.3 to 36.5 in | XXS | XS | waist 25.6 in, hip 31.5 in | US numeric 2 |
| S | waist 25.5 to 28 in, hip 35.8 to 38.3 in | XS or XXS | S | waist 27.6 in, hip 35.4 in | US numeric 4 |
| M | waist 27.3 to 29.5 in, hip 37.5 to 39.8 in | XS or S | M | waist 27.6 in, hip 35.4 in | US numeric 4 |
| L | waist 29.5 to 32 in, hip 39.8 to 42.3 in | M or S | L | waist 31.5 in, hip 43.3 in | US numeric 8 |
| XL | waist 32 to 34.3 in, hip 42.3 to 44.5 in | L | XL | waist 33.5 in, hip 47.2 in | US numeric 10 |
| XXL | waist 34.3 to 36.5 in, hip 44.5 to 46.8 in | XL | XXL | waist 35.4 in, hip 51.2 in | US numeric 12 |
What wearers say
Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.
Sources
- Uniqlo size guide, read on 2026-09-18. Uniqlo on TrueToSize
- Lorna Jane size guide, read on 2026-09-18.