Reiss to Boden clothing size

The short answer

Reiss 8 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 Reiss size read across to Boden. UK sizes on the left, US on the right.
Reiss	Reiss builds it for	Boden, by chart	Same label	Boden builds it for	Boden also prints
4	bust 31 in, waist 24 in, hip 34 in	not made	not published	not published	not published
6	bust 32 in, waist 25 in, hip 35 in	2	2	bust 32 to 33 in, waist 25 to 26 in, hip 34 to 35 in	Letter XS
8	bust 33 in, waist 26 in, hip 36 in	2	4	bust 32 to 33 in, waist 25 to 26 in, hip 34 to 35 in	Letter XS
10	bust 35 in, waist 28 in, hip 38 in	6	6	bust 34.3 to 35 in, waist 27.3 to 28 in, hip 36.3 to 37 in	Letter S
12	bust 37 in, waist 30 in, hip 40 in	8	8	bust 35.5 to 37 in, waist 28.5 to 30 in, hip 37.5 to 39 in	Letter M
14	bust 39 in, waist 31.5 in, hip 42 in	10	10	bust 37.5 to 39 in, waist 30.5 to 32 in, hip 39.5 to 41 in	Letter M
16	bust 41 in, waist 33.5 in, hip 44 in	12	12	bust 39.5 to 41 in, waist 32.5 to 34 in, hip 41.5 to 43 in	Letter L
18	bust 43 in, waist 36 in, hip 46.5 in	14	14	bust 41.5 to 43 in, waist 34.5 to 36 in, hip 43.5 to 45 in	Letter L

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

Reiss size guide, read on 2026-09-18.
Boden size guide, read on 2026-09-18.

Boden to Reiss