Sweaty Betty to Marks & Spencer (Goodmove) leggings size
The short answer
Sweaty Betty L is Marks & Spencer (Goodmove) 14 by the two brands' own charts.
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 | Marks & Spencer (Goodmove), by chart | Same label | Marks & Spencer (Goodmove) builds it for | Marks & Spencer (Goodmove) also prints |
|---|---|---|---|---|---|
| XXS | waist 23 in, hip 34 in | not made | not published | not published | not published |
| XS | waist 25 in, hip 36 in | 8 | not published | waist 25.5 in, hip 35.5 in | US numeric 4 · AU 8 |
| S | waist 27 in, hip 38 in | 10 | not published | waist 27.5 in, hip 37.5 in | US numeric 6 · AU 10 |
| M | waist 29 in, hip 40 in | 12 | not published | waist 29.5 in, hip 39.5 in | US numeric 8 · AU 12 |
| L | waist 31 in, hip 42 in | 14 | not published | waist 31.8 in, hip 41.5 in | US numeric 10 · AU 14 |
| XL | waist 33 in, hip 44 in | 16 or 14 | not published | waist 34 in, hip 43.3 in | US numeric 12 · AU 16 |
| XXL | waist 36 in, hip 46.5 in | 18 | not published | waist 36.3 in, hip 45.3 in | US numeric 14 · AU 18 |
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
- Marks & Spencer (Goodmove) size guide, read on 2026-09-18.