Under Armour to Diane von Furstenberg clothing size
The short answer
Under Armour XXS is Diane von Furstenberg XS by the two brands' own charts. 5 of 6 Under Armour sizes land on a different label at Diane von Furstenberg.
Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.
| Under Armour | Under Armour builds it for | Diane von Furstenberg, by chart | Same label | Diane von Furstenberg builds it for | Diane von Furstenberg also prints |
|---|---|---|---|---|---|
| XXS | bust 31 to 32.5 in, waist 24.5 to 25.5 in | XS | XXS | bust 32 in, waist 25 in, hip 35 in | US 0 |
| XS | bust 32.5 to 33.5 in, waist 25.5 to 27 in | S | XS | bust 33 to 34 in, waist 26 to 27 in, hip 36 to 37 in | US 2/4 |
| SM | bust 33.5 to 36 in, waist 27 to 29 in | M | not published | bust 35 to 36 in, waist 28 to 29 in, hip 38 to 39 in | US 6/8 |
| MD | bust 36 to 38 in, waist 29 to 31 in | L | not published | bust 37 to 38.5 in, waist 30 to 31.5 in, hip 40 to 41.5 in | US 10/12 |
| LG | bust 38 to 41 in, waist 31 to 34 in | XL or L | not published | bust 40 to 42 in, waist 33 to 35 in, hip 43 to 45 in | US 14/16 |
| XL | bust 41 to 44 in, waist 34 to 37 in | XL | XL | bust 40 to 42 in, waist 33 to 35 in, hip 43 to 45 in | US 14/16 |
| XXL | bust 44 to 47 in, waist 37 to 40 in | not made | not published | not published | not published |
| 3XL | bust 47 to 50 in, waist 40 to 43 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
- Under Armour size guide, read on 2026-09-18. Under Armour on TrueToSize
- Diane von Furstenberg size guide, read on 2026-09-18.