Athleta to lululemon leggings size
The short answer
Athleta XXS is lululemon 4 or 2 by the two brands' own charts.
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.
| Athleta | Athleta builds it for | lululemon, by chart | Same label | lululemon builds it for | lululemon also prints |
|---|---|---|---|---|---|
| XXS | waist 24.3 in, hip 34 in | 4 or 2 | 0 | waist 25 in, hip 35 in | Letter XS |
| XS | waist 25.3 to 26.3 in, hip 35 to 36 in | 4 or 6 | not published | waist 25 in, hip 35 in | Letter XS |
| S | waist 27.3 to 28.3 in, hip 37 to 38 in | 6 or 8 | not published | waist 27 in, hip 37 in | Letter S |
| M | waist 29.3 to 30.3 in, hip 39 to 40 in | 8 or 10 | not published | waist 29 in, hip 39 in | Letter M |
| L | waist 31.8 to 33.3 in, hip 41.5 to 43 in | 12 | not published | waist 33 in, hip 43 in | Letter XL |
| XL | waist 34.3 in, hip 44.5 in | 14 or 12 | not published | waist 35 in, hip 45 in | Letter XXL |
| 1X | waist 38 to 40 in, hip 47.3 to 49.3 in | 16 | not published | waist 38 in, hip 47 in | not published |
| 2X | waist 42 to 44.5 in, hip 51.3 to 53.8 in | 20 | not published | waist 43 in, hip 51 in | not published |
| 3X | waist 47 to 49.5 in, hip 56.3 to 58.8 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
- Athleta size guide, read on 2026-09-17. Athleta on TrueToSize
- lululemon size guide, read on 2026-09-17. lululemon on TrueToSize