Diane von Furstenberg to lululemon clothing size

The short answer

Diane von Furstenberg XXS is lululemon XS by the two brands' own charts. 1 of 6 Diane von Furstenberg sizes land on a different label at lululemon.

Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.

Every Diane von Furstenberg size read across to lululemon. Letter sizes on the left, Letter on the right.
Diane von Furstenberg	Diane von Furstenberg builds it for	lululemon, by chart	Same label	lululemon builds it for	lululemon also prints
XXS	bust 31 in, waist 24 in, hip 34 in	XS	XXS	bust 31 to 32 in	US 4
XS	bust 32 in, waist 25 in, hip 35 in	XS	XS	bust 31 to 32 in	US 4
S	bust 33 to 34 in, waist 26 to 27 in, hip 36 to 37 in	S	S	bust 33 to 34 in	US 6
M	bust 35 to 36 in, waist 28 to 29 in, hip 38 to 39 in	M	M	bust 35 to 36 in	US 8
L	bust 37 to 38.5 in, waist 30 to 31.5 in, hip 40 to 41.5 in	L	L	bust 37 to 38.5 in	US 10
XL	bust 40 to 42 in, waist 33 to 35 in, hip 43 to 45 in	XL	XL	bust 40 to 42 in	US 12-14

Tinted rows change label or sit between two sizes. Read from the two charts only; no formula and no averaging.

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.

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Sources

Diane von Furstenberg size guide, read on 2026-09-18.
lululemon size guide, read on 2026-09-18. lululemon on TrueToSize

lululemon to Diane von Furstenberg