Spanx to Girlfriend Collective leggings size
The short answer
Spanx 1X is Girlfriend Collective XXL by the two brands' own charts. 3 of 8 Spanx sizes land on a different label at Girlfriend Collective.
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 | Girlfriend Collective, by chart | Same label | Girlfriend Collective builds it for | Girlfriend Collective also prints |
|---|---|---|---|---|---|
| XS | waist 25 to 27 in, hip 34 to 36 in | XS | XS | waist 24 to 26 in, hip 34 to 36 in | not published |
| S | waist 27 to 29 in, hip 36 to 38 in | S | S | waist 26 to 28 in, hip 36 to 39 in | not published |
| M | waist 29 to 31 in, hip 38 to 40 in | M | M | waist 28 to 30.5 in, hip 39 to 41.5 in | not published |
| L | waist 31 to 33.5 in, hip 40 to 42.5 in | L | L | waist 30.5 to 33 in, hip 41.5 to 44 in | not published |
| XL | waist 33.5 to 36 in, hip 42.5 to 45 in | XL | XL | waist 33 to 35.5 in, hip 44 to 46.5 in | not published |
| 1X | waist 36 to 39 in, hip 45 to 48 in | XXL | not published | waist 35.5 to 39 in, hip 46.5 to 50 in | not published |
| 2X | waist 39 to 42 in, hip 48 to 51 in | XXXL | not published | waist 39 to 42.5 in, hip 50 to 53.5 in | not published |
| 3X | waist 42 to 45 in, hip 51 to 54 in | 4XL | not published | waist 42.5 to 46 in, hip 53.5 to 57 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
- Spanx size guide, read on 2026-09-18. Spanx on TrueToSize
- Girlfriend Collective size guide, read on 2026-09-17. Girlfriend Collective on TrueToSize