Boden to lululemon clothing size

The short answer

Boden 6 is lululemon M or S by the two brands' own charts.

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

Every Boden size read across to lululemon. US sizes on the left, Letter on the right.
Boden	Boden builds it for	lululemon, by chart	Same label	lululemon builds it for	lululemon also prints
2	bust 32 to 33 in, waist 25 to 26 in, hip 34 to 35 in	XS or S	XS	bust 31 to 32 in	US 4
4	bust 33.3 to 34 in, waist 26.3 to 27 in, hip 35.3 to 36 in	S	S	bust 33 to 34 in	US 6
6	bust 34.3 to 35 in, waist 27.3 to 28 in, hip 36.3 to 37 in	M or S	S	bust 35 to 36 in	US 8
8	bust 35.5 to 37 in, waist 28.5 to 30 in, hip 37.5 to 39 in	M	M	bust 35 to 36 in	US 8
10	bust 37.5 to 39 in, waist 30.5 to 32 in, hip 39.5 to 41 in	L	M	bust 37 to 38.5 in	US 10
12	bust 39.5 to 41 in, waist 32.5 to 34 in, hip 41.5 to 43 in	XL	L	bust 40 to 42 in	US 12-14
14	bust 41.5 to 43 in, waist 34.5 to 36 in, hip 43.5 to 45 in	XL	L	bust 40 to 42 in	US 12-14
16	bust 43.5 to 45 in, waist 36.5 to 38 in, hip 45.5 to 47 in	1X	XL	bust 45 to 47 in	US 16-18
18	bust 45.5 to 47.5 in, waist 38.5 to 40.5 in, hip 47.5 to 49.5 in	1X	XL	bust 45 to 47 in	US 16-18

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

Boden size guide, read on 2026-09-18.
lululemon size guide, read on 2026-09-18. lululemon on TrueToSize

lululemon to Boden