Oysho to adidas leggings size

The short answer

Oysho XXS is adidas XS by the two brands' own charts. 3 of 7 Oysho sizes land on a different label at adidas.

Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.

Every Oysho size read across to adidas. Letter sizes on the left, Letter on the right.
Oysho	Oysho builds it for	adidas, by chart	Same label	adidas builds it for	adidas also prints
XXS	waist 24 to 25 in, hip 36 to 37 in	XS	2XS	waist 24 to 26 in, hip 33.5 to 35.5 in, inseam 31 in	US numeric 0-2
XS	waist 25 to 26 in, hip 37 to 38 in	XS	XS	waist 24 to 26 in, hip 33.5 to 35.5 in, inseam 31 in	US numeric 0-2
S	waist 26 to 27 in, hip 38 to 39 in	S	S	waist 26.5 to 28.5 in, hip 36 to 38 in, inseam 31 in	US numeric 4-6
M	waist 27 to 29 in, hip 39 to 41 in	S	M	waist 26.5 to 28.5 in, hip 36 to 38 in, inseam 31 in	US numeric 4-6
L	waist 30 to 33 in, hip 42 to 45 in	L	L	waist 31.5 to 33.5 in, hip 41 to 43 in, inseam 31.5 in	US numeric 12-14
XL	waist 33 to 35 in, hip 45 to 47 in	XL	XL	waist 34 to 37 in, hip 43.5 to 46 in, inseam 31.5 in	US numeric 16-18
XXL	waist 36 to 39 in, hip 48 to 51 in	1X	2XL	waist 35 to 38.5 in, hip 43.5 to 47 in, inseam 31 in	US numeric 14W-16W

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. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.

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Sources

Oysho size guide, read on 2026-09-18. Oysho on TrueToSize
adidas size guide, read on 2026-09-18. adidas on TrueToSize

adidas to Oysho