Banana Republic to lululemon size
The short answer
Banana Republic S is lululemon XS or S by the two brands' own charts. 3 of 6 Banana Republic sizes land on a different label at lululemon.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
| Banana Republic | Banana Republic builds it for | lululemon, by chart | Same label | lululemon builds it for | lululemon also prints |
|---|---|---|---|---|---|
| XXS | chest 32 to 33 in, waist 25 to 26 in, neck 13 to 13.5 in, sleeve 31 in | not made | not published | not published | not published |
| XS | chest 34 to 35 in, waist 27 to 28 in, neck 13 to 13.5 in, sleeve 32 in | XS | XS | chest 35 to 36 in | not published |
| S | chest 36 to 37 in, waist 29 to 31 in, neck 14 to 14.5 in, sleeve 33 in | XS or S | S | chest 35 to 36 in | not published |
| M | chest 38 to 40 in, waist 32 to 33 in, neck 15 to 15.5 in, sleeve 34 in | M | M | chest 39 to 40 in | not published |
| L | chest 41 to 44 in, waist 34 to 35 in, neck 16 to 16.5 in, sleeve 35 in | L or XL | L | chest 41 to 42 in | not published |
| XL | chest 45 to 48 in, waist 36 to 37 in, neck 17 to 17.5 in, sleeve 35.5 in | XXL | XL | chest 46 to 48 in | not published |
| XXL | chest 49 to 52 in, waist 38 to 39 in, neck 18 to 18.5 in, sleeve 36 in | 3XL | XXL | chest 50 to 52 in | 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
- Banana Republic size guide, read on 2026-09-18.
- lululemon size guide, read on 2026-09-18. lululemon on TrueToSize