Sandro to Reiss clothing size

The short answer

Sandro 38 is Reiss 10 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 Sandro size read across to Reiss. FR sizes on the left, UK on the right.
Sandro	Sandro builds it for	Reiss, by chart	Same label	Reiss builds it for	Reiss also prints
34	bust 32 in, waist 25 in, hip 35 in	6	6	bust 32 in, waist 25 in, hip 35 in	US 2 · Letter XS · FR 36 · IT 38 · AU 6 · EU (as printed) 34
36	bust 34 in, waist 27 in, hip 36 in	8 or 10	8	bust 33 in, waist 26 in, hip 36 in	US 4 · Letter S · FR 38 · IT 40 · AU 8 · EU (as printed) 36
38	bust 35 in, waist 28 in, hip 38 in	10	10	bust 35 in, waist 28 in, hip 38 in	US 6 · Letter S · FR 40 · IT 42 · AU 10 · EU (as printed) 38
40	bust 37 in, waist 30 in, hip 39 in	12	12	bust 37 in, waist 30 in, hip 40 in	US 8 · Letter M · FR 42 · IT 44 · AU 12 · EU (as printed) 40
42	bust 39 in, waist 31 in, hip 41 in	14	14	bust 39 in, waist 31.5 in, hip 42 in	US 10 · Letter M · FR 44 · IT 46 · AU 14 · EU (as printed) 42

Tinted rows change label or sit between two sizes. 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

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

Reiss to Sandro