Athleta to lululemon clothing size
The short answer
Athleta XXS is lululemon XS by the two brands' own charts. 5 of 8 Athleta sizes land on a different label at lululemon.
Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.
| Athleta | Athleta builds it for | lululemon, by chart | Same label | lululemon builds it for | lululemon also prints |
|---|---|---|---|---|---|
| XXS | bust 31.5 in, waist 24.3 in, hip 34 in | XS | XXS | bust 31 to 32 in | US 4 |
| XS | bust 32.5 to 33.5 in, waist 25.3 to 26.3 in, hip 35 to 36 in | S | XS | bust 33 to 34 in | US 6 |
| S | bust 34.5 to 35.5 in, waist 27.3 to 28.3 in, hip 37 to 38 in | M | S | bust 35 to 36 in | US 8 |
| M | bust 36.5 to 37.5 in, waist 29.3 to 30.3 in, hip 39 to 40 in | L | M | bust 37 to 38.5 in | US 10 |
| L | bust 39 to 40.5 in, waist 31.8 to 33.3 in, hip 41.5 to 43 in | XL | L | bust 40 to 42 in | US 12-14 |
| XL | bust 42 in, waist 34.3 in, hip 44.5 in | XL | XL | bust 40 to 42 in | US 12-14 |
| 1X | bust 44.3 to 46.3 in, waist 38 to 40 in, hip 47.3 to 49.3 in | 1X | 1X | bust 45 to 47 in | US 16-18 |
| 2X | bust 48.3 to 50.8 in, waist 42 to 44.5 in, hip 51.3 to 53.8 in | 2X | 2X | bust 49 to 51 in | US 20-22 |
| 3X | bust 53.3 to 55.8 in, 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, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.
Sources
- Athleta size guide, read on 2026-09-18. Athleta on TrueToSize
- lululemon size guide, read on 2026-09-18. lululemon on TrueToSize