Spanx to Fabletics leggings size
The short answer
Spanx 1X is Fabletics XL or XXL/1X by the two brands' own charts. 2 of 8 Spanx 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.
| Spanx | Spanx builds it for | Fabletics, by chart | Same label | Fabletics builds it for | Fabletics also prints |
|---|---|---|---|---|---|
| XS | waist 25 to 27 in, hip 34 to 36 in | XS | XS | waist 25.5 to 26.5 in, hip 36 to 37 in | US numeric 0-2 |
| S | waist 27 to 29 in, hip 36 to 38 in | S | S | waist 27 to 28 in, hip 37.5 to 38.5 in | US numeric 4-6 |
| M | waist 29 to 31 in, hip 38 to 40 in | M | M | waist 29 to 31 in, hip 39 to 41 in | US numeric 8-10 |
| L | waist 31 to 33.5 in, hip 40 to 42.5 in | L | L | waist 32 to 34 in, hip 42 to 44 in | US numeric 12-14 |
| XL | waist 33.5 to 36 in, hip 42.5 to 45 in | XL | XL | waist 35 to 37 in, hip 45 to 47 in | US numeric 16-18 |
| 1X | waist 36 to 39 in, hip 45 to 48 in | XL or XXL/1X | XXL/1X | waist 35 to 37 in, hip 45 to 47 in | US numeric 16-18 |
| 2X | waist 39 to 42 in, hip 48 to 51 in | XXL/1X | 2X | waist 38 to 41 in, hip 48 to 51 in | US numeric 16-18 |
| 3X | waist 42 to 45 in, hip 51 to 54 in | 3X | 3X | waist 43 to 45 in, hip 53 to 55 in | US numeric 24-26 |
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
- Spanx size guide, read on 2026-09-18. Spanx on TrueToSize
- Fabletics size guide, read on 2026-09-18. Fabletics on TrueToSize