Old Navy to Champion size
The short answer
Old Navy XS is Champion S by the two brands' own charts. 4 of 7 Old Navy sizes land on a different label at Champion.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
| Old Navy | Old Navy builds it for | Champion, by chart | Same label | Champion builds it for | Champion also prints |
|---|---|---|---|---|---|
| XS | chest 36 to 37 in, neck 13 to 13.5 in, sleeve 31.5 to 32 in | S | XS | chest 36 to 38 in, waist 30 to 32 in | not published |
| S | chest 38 to 39 in, neck 14 to 14.5 in, sleeve 32.5 to 33 in | M | S | chest 38 to 41 in, waist 32 to 35 in | not published |
| M | chest 40 to 42 in, neck 15 to 15.5 in, sleeve 33.5 to 34 in | M | M | chest 38 to 41 in, waist 32 to 35 in | not published |
| L | chest 44 to 46 in, neck 16 to 16.5 in, sleeve 34.5 to 35 in | L | L | chest 41 to 45 in, waist 35 to 39 in | not published |
| XL | chest 48 to 50 in, neck 17 to 17.5 in, sleeve 35.5 to 36 in | XL | XL | chest 45 to 49 in, waist 39 to 44 in | not published |
| XXL | chest 51 to 53 in, neck 18 to 18.5 in, sleeve 36.5 to 37 in | 2XL | 2XL | chest 49 to 53 in, waist 44 to 48 in | not published |
| XXXL | chest 55 to 57 in, neck 19 to 19.5 in, sleeve 37.5 to 38 in | 2XL | not published | chest 49 to 53 in, waist 44 to 48 in | not published |
| XXXXL | chest 58 to 60 in, neck 20.5 to 21 in, sleeve 38.5 to 39 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
- Old Navy size guide, read on 2026-09-18. Old Navy on TrueToSize
- Champion size guide, read on 2026-09-18.