Banana Republic to Boden clothing size

The short answer

Banana Republic 2 is Boden 4 by the two brands' own charts. 8 of 10 Banana Republic sizes land on a different label at Boden.

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

Every Banana Republic size read across to Boden. US sizes on the left, US on the right.
Banana Republic	Banana Republic builds it for	Boden, by chart	Same label	Boden builds it for	Boden also prints
000	bust 30.5 in, waist 24 in, hip 33.5 in	not made	not published	not published	not published
000	bust 30.5 in, waist 24 in, hip 33.5 in	not made	not published	not published	not published
000	bust 30.5 in, waist 24 in, hip 33.5 in	not made	not published	not published	not published
2	bust 33.5 in, waist 27 in, hip 36.5 in	4	2	bust 33.3 to 34 in, waist 26.3 to 27 in, hip 35.3 to 36 in	Letter S
4	bust 34.5 in, waist 28 in, hip 37.5 in	6	4	bust 34.3 to 35 in, waist 27.3 to 28 in, hip 36.3 to 37 in	Letter S
6	bust 35.5 in, waist 29 in, hip 38.5 in	8	6	bust 35.5 to 37 in, waist 28.5 to 30 in, hip 37.5 to 39 in	Letter M
8	bust 36.5 in, waist 30 in, hip 39.5 in	8	8	bust 35.5 to 37 in, waist 28.5 to 30 in, hip 37.5 to 39 in	Letter M
10	bust 37.5 in, waist 31 in, hip 40.5 in	10	10	bust 37.5 to 39 in, waist 30.5 to 32 in, hip 39.5 to 41 in	Letter M
12	bust 39 in, waist 32.5 in, hip 42 in	10	12	bust 37.5 to 39 in, waist 30.5 to 32 in, hip 39.5 to 41 in	Letter M
14	bust 40.5 in, waist 34 in, hip 43.5 in	12	14	bust 39.5 to 41 in, waist 32.5 to 34 in, hip 41.5 to 43 in	Letter L
16	bust 42.5 in, waist 36 in, hip 45.5 in	14	16	bust 41.5 to 43 in, waist 34.5 to 36 in, hip 43.5 to 45 in	Letter L
18	bust 44.5 in, waist 38 in, hip 47.5 in	16	18	bust 43.5 to 45 in, waist 36.5 to 38 in, hip 45.5 to 47 in	Letter XL
20	bust 47.5 in, waist 41 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

Tinted rows change label or sit between two sizes. 3 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

Banana Republic size guide, read on 2026-09-18.
Boden size guide, read on 2026-09-18.

Boden to Banana Republic