Lorna Jane to Old Navy leggings size
The short answer
Lorna Jane XXS is Old Navy XS by the two brands' own charts. 5 of 7 Lorna Jane sizes land on a different label at Old Navy.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| Lorna Jane | Lorna Jane builds it for | Old Navy, by chart | Same label | Old Navy builds it for | Old Navy also prints |
|---|---|---|---|---|---|
| XXS | waist 25.6 in, hip 31.5 in | XS | XXS | waist 25 to 26 in, hip 35.5 to 36.5 in | US numeric 0-2 |
| XS | waist 27.6 in, hip 35.4 in | S | XS | waist 27 to 28 in, hip 37.5 to 38.5 in | US numeric 4-6 |
| S | waist 29.5 in, hip 39.4 in | M | S | waist 29 to 30 in, hip 39.5 to 40.5 in | US numeric 8-10 |
| M | waist 31.5 in, hip 43.3 in | L | M | waist 31.5 to 33.5 in, hip 42 to 44 in | US numeric 12-14 |
| L | waist 33.5 in, hip 47.2 in | L | L | waist 31.5 to 33.5 in, hip 42 to 44 in | US numeric 12-14 |
| XL | waist 35.4 in, hip 51.2 in | XL or L | XL | waist 36.3 to 39 in, hip 46.5 to 49 in | US numeric 16-18 |
| XXL | waist 37.4 in, hip 55.1 in | XL | XXL | waist 36.3 to 39 in, hip 46.5 to 49 in | US numeric 16-18 |
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
- Lorna Jane size guide, read on 2026-09-18.
- Old Navy size guide, read on 2026-09-17. Old Navy on TrueToSize