Sweaty Betty to Oysho leggings size
The short answer
Sweaty Betty XS is Oysho XXS by the two brands' own charts. 1 of 6 Sweaty Betty sizes land on a different label at Oysho.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| Sweaty Betty | Sweaty Betty builds it for | Oysho, by chart | Same label | Oysho builds it for | Oysho also prints |
|---|---|---|---|---|---|
| XXS | waist 23 in, hip 34 in | not made | XXS | not published | not published |
| XS | waist 25 in, hip 36 in | XXS | XS | waist 24 to 25 in, hip 36 to 37 in | not published |
| S | waist 27 in, hip 38 in | S | S | waist 26 to 27 in, hip 38 to 39 in | not published |
| M | waist 29 in, hip 40 in | M | M | waist 27 to 29 in, hip 39 to 41 in | not published |
| L | waist 31 in, hip 42 in | L | L | waist 30 to 33 in, hip 42 to 45 in | not published |
| XL | waist 33 in, hip 44 in | XL | XL | waist 33 to 35 in, hip 45 to 47 in | not published |
| XXL | waist 36 in, hip 46.5 in | XXL | XXL | waist 36 to 39 in, hip 48 to 51 in | not published |
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.
Sources
- Sweaty Betty size guide, read on 2026-09-17. Sweaty Betty on TrueToSize
- Oysho size guide, read on 2026-09-18. Oysho on TrueToSize