Lululemon to Buffbunny leggings size
The short answer
lululemon 4 is Buffbunny XXS/00 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.
| lululemon | lululemon builds it for | Buffbunny, by chart | Same label | Buffbunny builds it for | Buffbunny 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 | XXS/00 | not published | not published |
| 4 | waist 25 in, hip 35 in | XXS/00 | XS/0-2 | waist 24 to 25 in, hip 33 to 35 in | not published |
| 6 | waist 27 in, hip 37 in | S/4-6 | S/4-6 | waist 27 to 28 in, hip 38 to 39 in | not published |
| 8 | waist 29 in, hip 39 in | M/6-8 | M/6-8 | waist 29 to 31 in, hip 39 to 41 in | not published |
| 10 | waist 31 in, hip 41 in | M/6-8 | L/10-12 | waist 29 to 31 in, hip 39 to 41 in | not published |
| 12 | waist 33 in, hip 43 in | L/10-12 | XL/14-16 | waist 32 to 34 in, hip 42 to 44 in | not published |
| 14 | waist 35 in, hip 45 in | XL/14-16 | XXL/16-18 | waist 35 to 37 in, hip 45 to 47 in | not published |
| 16 | waist 38 in, hip 47 in | XXL/16-18 | not published | waist 37 to 39 in, hip 47 to 49 in | not published |
| 18 | waist 41 in, hip 49 in | XXXL/18-20 | not published | waist 39 to 41 in, hip 50 to 52 in | not published |
| 20 | waist 43 in, hip 51 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
- lululemon size guide, read on 2026-09-17. lululemon on TrueToSize
- Buffbunny size guide, read on 2026-09-18.