J.Crew to Sandro clothing size

The short answer

J.Crew 000 is Sandro 34 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 J.Crew size read across to Sandro. US sizes on the left, FR on the right.
J.Crew	J.Crew builds it for	Sandro, by chart	Same label	Sandro builds it for	Sandro also prints
000	bust 31 in, waist 23 in	34	not published	bust 32 in, waist 25 in, hip 35 in	US 2 · Letter XS · UK 6 · DE 32 · IT 38
000	bust 31 in, waist 23 in	34	not published	bust 32 in, waist 25 in, hip 35 in	US 2 · Letter XS · UK 6 · DE 32 · IT 38
000	bust 31 in, waist 23 in	34	not published	bust 32 in, waist 25 in, hip 35 in	US 2 · Letter XS · UK 6 · DE 32 · IT 38
2	bust 34 in, waist 26 in	36	34	bust 34 in, waist 27 in, hip 36 in	US 4 · Letter S · UK 8 · DE 34 · IT 40
4	bust 35 in, waist 27 in	38	36	bust 35 in, waist 28 in, hip 38 in	US 6 · Letter M · UK 10 · DE 36 · IT 42
6	bust 36 in, waist 28 in	38 or 40	38	bust 35 in, waist 28 in, hip 38 in	US 6 · Letter M · UK 10 · DE 36 · IT 42
8	bust 37 in, waist 29 in	40	40	bust 37 in, waist 30 in, hip 39 in	US 8 · Letter L · UK 12 · DE 38 · IT 44
10	bust 38 in, waist 30 in	40 or 42	42	bust 37 in, waist 30 in, hip 39 in	US 8 · Letter L · UK 12 · DE 38 · IT 44
12	bust 39.5 in, waist 31.5 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 41 in, waist 33 in	not made	not published	not published	not published
16	bust 43.5 in, waist 35.5 in	not made	not published	not published	not published
18	bust 46 in, waist 38 in	not made	not published	not published	not published
20	bust 48.5 in, waist 40.5 in	not made	not published	not published	not published
22	bust 51 in, waist 43 in	not made	not published	not published	not published
24	bust 53.5 in, waist 45.5 in	not made	not published	not published	not published

Tinted rows change label or sit between two sizes. 6 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

J.Crew size guide, read on 2026-09-18.
Sandro size guide, read on 2026-09-18.

Sandro to J.Crew