Sweaty Betty to Fabletics leggings size
The short answer
Sweaty Betty XS is Fabletics XXS by the two brands' own charts. 4 of 6 Sweaty Betty sizes land on a different label at Fabletics.
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 | Fabletics, by chart | Same label | Fabletics builds it for | Fabletics 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 33 to 35 in | US numeric 00 |
| S | waist 27 in, hip 38 in | S | S | waist 27 to 28 in, hip 37.5 to 38.5 in | US numeric 4-6 |
| M | waist 29 in, hip 40 in | M | M | waist 29 to 31 in, hip 39 to 41 in | US numeric 8-10 |
| L | waist 31 in, hip 42 in | M | L | waist 29 to 31 in, hip 39 to 41 in | US numeric 8-10 |
| XL | waist 33 in, hip 44 in | L | XL | waist 32 to 34 in, hip 42 to 44 in | US numeric 12-14 |
| XXL | waist 36 in, hip 46.5 in | XL | XXL/1X | waist 35 to 37 in, hip 45 to 47 in | US numeric 16-18 |
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
- Fabletics size guide, read on 2026-09-18. Fabletics on TrueToSize