Old Navy to Aerie (OFFLINE) leggings size
The short answer
Old Navy XL is Aerie (OFFLINE) XXL by the two brands' own charts. 1 of 6 Old Navy sizes land on a different label at Aerie (OFFLINE).
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| Old Navy | Old Navy builds it for | Aerie (OFFLINE), by chart | Same label | Aerie (OFFLINE) builds it for | Aerie (OFFLINE) also prints |
|---|---|---|---|---|---|
| XXS | waist 24 in, hip 34.5 in | XXS or XS | XXS | waist 22.5 to 23.5 in, hip 32 to 33 in | US numeric 000-00 |
| XS | waist 25 to 26 in, hip 35.5 to 36.5 in | XS | XS | waist 24.5 to 25.5 in, hip 34 to 35 in | US numeric 0-2 |
| S | waist 27 to 28 in, hip 37.5 to 38.5 in | S | S | waist 26.5 to 27.5 in, hip 36 to 37 in | US numeric 4-6 |
| M | waist 29 to 30 in, hip 39.5 to 40.5 in | M | M | waist 28.5 to 29.5 in, hip 38 to 39 in | US numeric 8-10 |
| L | waist 31.5 to 33.5 in, hip 42 to 44 in | L | L | waist 31 to 32.5 in, hip 40.5 to 42 in | US numeric 12-14 |
| XL | waist 36.3 to 39 in, hip 46.5 to 49 in | XXL | XL | waist 38 in, hip 47.5 in | US numeric 20 |
| XXL | waist 42 in, hip 51.5 in | not made | XXL | not published | not published |
| 2X | waist 42 to 44.3 in, hip 51.5 to 53.8 in | not made | not published | not published | not published |
| 3X | waist 46.6 to 49 in, hip 56.1 to 58.5 in | not made | not published | not published | not published |
| 4X | waist 51.5 to 54 in, hip 61 to 63.5 in | not made | not published | not published | not published |
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
- Old Navy size guide, read on 2026-09-17. Old Navy on TrueToSize
- Aerie (OFFLINE) size guide, read on 2026-09-18. Aerie (OFFLINE) on TrueToSize