Reformation to Boden clothing size

The short answer

Reformation XS is Boden 2 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 Reformation size read across to Boden. Letter sizes on the left, US on the right.
Reformation	Reformation builds it for	Boden, by chart	Same label	Boden builds it for	Boden also prints
XS	bust 33 in, waist 25 in, hip 36 in	2	not published	bust 32 to 33 in, waist 25 to 26 in, hip 34 to 35 in	Letter XS
S	bust 35 in, waist 27 in, hip 38 in	6	not published	bust 34.3 to 35 in, waist 27.3 to 28 in, hip 36.3 to 37 in	Letter S
M	bust 37 in, waist 29 in, hip 40 in	8	not published	bust 35.5 to 37 in, waist 28.5 to 30 in, hip 37.5 to 39 in	Letter M
L	bust 39.5 in, waist 31.5 in, hip 42.5 in	12	10	bust 39.5 to 41 in, waist 32.5 to 34 in, hip 41.5 to 43 in	Letter L
XL	bust 41.5 in, waist 33.5 in, hip 44.5 in	14	12	bust 41.5 to 43 in, waist 34.5 to 36 in, hip 43.5 to 45 in	Letter L
1X	bust 45 in, waist 37.5 in, hip 47.5 in	16	14	bust 43.5 to 45 in, waist 36.5 to 38 in, hip 45.5 to 47 in	Letter XL
2X	bust 48 in, waist 40.5 in, hip 50.5 in	18	not published	bust 45.5 to 47.5 in, waist 38.5 to 40.5 in, hip 47.5 to 49.5 in	Letter XL
3X	bust 51 in, waist 43.5 in, hip 53.5 in	not made	not published	not published	not published

Tinted rows change label or sit between two sizes. 1 sizes have no counterpart on the Boden chart. 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

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

Boden to Reformation