Banana Republic to Sandro clothing size

The short answer

Banana Republic 8 is Sandro 40 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 Banana Republic size read across to Sandro. US sizes on the left, FR on the right.
Banana Republic	Banana Republic builds it for	Sandro, by chart	Same label	Sandro builds it for	Sandro 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	36	not published	bust 34 in, waist 27 in, hip 36 in	US 4 · Letter S · UK 8 · DE 34 · IT 40
4	bust 34.5 in, waist 28 in, hip 37.5 in	36 or 38	not published	bust 34 in, waist 27 in, hip 36 in	US 4 · Letter S · UK 8 · DE 34 · IT 40
6	bust 35.5 in, waist 29 in, hip 38.5 in	38	not published	bust 35 in, waist 28 in, hip 38 in	US 6 · Letter M · UK 10 · DE 36 · IT 42
8	bust 36.5 in, waist 30 in, hip 39.5 in	40	not published	bust 37 in, waist 30 in, hip 39 in	US 8 · Letter L · UK 12 · DE 38 · IT 44
10	bust 37.5 in, waist 31 in, hip 40.5 in	40	not published	bust 37 in, waist 30 in, hip 39 in	US 8 · Letter L · UK 12 · DE 38 · IT 44
12	bust 39 in, waist 32.5 in, hip 42 in	42	not published	bust 39 in, waist 31 in, hip 41 in	US 10 · Letter XL · UK 14 · DE 40 · IT 46
14	bust 40.5 in, waist 34 in, hip 43.5 in	not made	not published	not published	not published
16	bust 42.5 in, waist 36 in, hip 45.5 in	not made	not published	not published	not published
18	bust 44.5 in, waist 38 in, hip 47.5 in	not made	not published	not published	not published
20	bust 47.5 in, waist 41 in, hip 50.5 in	not made	not published	not published	not published

Tinted rows change label or sit between two sizes. 7 sizes have no counterpart on the Sandro 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.
Sandro size guide, read on 2026-09-18.

Sandro to Banana Republic