Lacoste to American Eagle size
The short answer
Lacoste S is American Eagle XS by the two brands' own charts. 8 of 9 Lacoste sizes land on a different label at American Eagle.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
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.
| Lacoste | Lacoste builds it for | American Eagle, by chart | Same label | American Eagle builds it for | American Eagle also prints |
|---|---|---|---|---|---|
| XS | chest 34 in, waist 28 in | XS | XS | chest 35 to 36 in, neck 13.5 to 14 in, sleeve 31.5 in | not published |
| S | chest 35 to 37 in, waist 30 to 31 in | XS | S | chest 35 to 36 in, neck 13.5 to 14 in, sleeve 31.5 in | not published |
| M | chest 38 to 40 in, waist 33 to 35 in | S | M | chest 37 to 39 in, neck 14.5 to 15 in, sleeve 32.5 in | not published |
| L | chest 41 to 43 in, waist 36 to 38 in | M | L | chest 40 to 42 in, neck 15 to 15.5 in, sleeve 33.5 in | not published |
| XL | chest 44 to 46 in, waist 39 to 42 in | L | XL | chest 43 to 45 in, neck 15.5 to 16 in, sleeve 34.5 in | not published |
| 2XL | chest 48 to 49 in, waist 44 to 46 in | XL | XXL | chest 46 to 48 in, neck 16.5 to 17 in, sleeve 35.5 in | not published |
| 3XL | chest 51 in, waist 48 in | XXL | XXXL | chest 49 to 51 in, neck 17 to 18 in, sleeve 36.5 in | not published |
| 4X | chest 53 in, waist 50 in | XXXL | not published | chest 52 to 54 in, neck 18 to 19 in, sleeve 37 in | not published |
| 1XG | chest 55 in, waist 52 in | XXXL | not published | chest 52 to 54 in, neck 18 to 19 in, sleeve 37 in | not published |
| 2XG | chest 57 in, waist 54 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
- Lacoste size guide, read on 2026-09-18.
- American Eagle size guide, read on 2026-09-18. American Eagle on TrueToSize