Lululemon to Banana Republic clothing size
The short answer
lululemon XXS is Banana Republic 000 by the two brands' own charts.
Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.
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 | Banana Republic, by chart | Same label | Banana Republic builds it for | Banana Republic also prints |
|---|---|---|---|---|---|
| XXXS | bust 28.5 in | not made | 000 | not published | not published |
| XXS | bust 30 in | 000 | 2 | bust 30.5 in, waist 24 in, hip 33.5 in | Letter XXS |
| XS | bust 31 to 32 in | 00 | 4 | bust 31.5 in, waist 25 in, hip 34.5 in | Letter XXS |
| S | bust 33 to 34 in | 2 | 6 | bust 33.5 in, waist 27 in, hip 36.5 in | Letter XS |
| M | bust 35 to 36 in | 6 | 8 | bust 35.5 in, waist 29 in, hip 38.5 in | Letter S |
| L | bust 37 to 38.5 in | 10 | 10 | bust 37.5 in, waist 31 in, hip 40.5 in | Letter M |
| XL | bust 40 to 42 in | 14 | not published | bust 40.5 in, waist 34 in, hip 43.5 in | Letter L |
| 1X | bust 45 to 47 in | 18 or 20 | not published | bust 44.5 in, waist 38 in, hip 47.5 in | Letter XL |
| 2X | bust 49 to 51 in | 20 | not published | bust 47.5 in, waist 41 in, hip 50.5 in | Letter XXL |
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
- lululemon size guide, read on 2026-09-18. lululemon on TrueToSize
- Banana Republic size guide, read on 2026-09-18.