Lululemon to Smartwool leggings size
The short answer
lululemon 8 is Smartwool S 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 3 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.
| lululemon | lululemon builds it for | Smartwool, by chart | Same label | Smartwool builds it for | Smartwool also prints |
|---|---|---|---|---|---|
| 0 | waist 21 in, hip 32 in | not made | not published | not published | not published |
| 2 | waist 23 in, hip 33 in | not made | not published | not published | not published |
| 4 | waist 25 in, hip 35 in | not made | not published | not published | not published |
| 6 | waist 27 in, hip 37 in | not made | S | not published | not published |
| 8 | waist 29 in, hip 39 in | S | M | waist 29 to 31 in, hip 36 to 38 in | not published |
| 10 | waist 31 in, hip 41 in | S | L | waist 29 to 31 in, hip 36 to 38 in | not published |
| 12 | waist 33 in, hip 43 in | M | XL | waist 32 to 34 in, hip 39 to 41 in | not published |
| 14 | waist 35 in, hip 45 in | L | XXL | waist 35 to 37 in, hip 42 to 44 in | not published |
| 16 | waist 38 in, hip 47 in | XL | not published | waist 38 to 40 in, hip 45 to 48 in | not published |
| 18 | waist 41 in, hip 49 in | XXL | not published | waist 41 to 44 in, hip 49 to 51 in | not published |
| 20 | waist 43 in, hip 51 in | XXL | not published | waist 41 to 44 in, hip 49 to 51 in | 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
- lululemon size guide, read on 2026-09-17. lululemon on TrueToSize
- Smartwool size guide, read on 2026-09-18.