Girlfriend Collective to Gymshark leggings size
The short answer
Girlfriend Collective XS is Gymshark XXS or XS by the two brands' own charts. 2 of 7 Girlfriend Collective sizes land on a different label at Gymshark.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| Girlfriend Collective | Girlfriend Collective builds it for | Gymshark, by chart | Same label | Gymshark builds it for | Gymshark also prints |
|---|---|---|---|---|---|
| XXS | waist 22 to 24 in, hip 32 to 34 in | XXS | XXS | waist 24 in, hip 35.5 in | US numeric 2-4 |
| XS | waist 24 to 26 in, hip 34 to 36 in | XXS or XS | XS | waist 24 in, hip 35.5 in | US numeric 2-4 |
| S | waist 26 to 28 in, hip 36 to 39 in | XS or S | S | waist 26 in, hip 37.5 in | US numeric 4-6 |
| M | waist 28 to 30.5 in, hip 39 to 41.5 in | M or S | M | waist 30 in, hip 41.5 in | US numeric 8-10 |
| L | waist 30.5 to 33 in, hip 41.5 to 44 in | L | L | waist 32 in, hip 43.5 in | US numeric 10-12 |
| XL | waist 33 to 35.5 in, hip 44 to 46.5 in | XL | XL | waist 34 in, hip 45.5 in | US numeric 12-14 |
| XXL | waist 35.5 to 39 in, hip 46.5 to 50 in | XXL | XXL | waist 36 in, hip 47.7 in | US numeric 14-16 |
| XXXL | waist 39 to 42.5 in, hip 50 to 53.5 in | not made | not published | not published | not published |
| 4XL | waist 42.5 to 46 in, hip 53.5 to 57 in | not made | not published | not published | not published |
| 5XL | waist 46 to 49.5 in, hip 57 to 60.5 in | not made | not published | not published | not published |
| 6XL | waist 49.5 to 53 in, hip 60.5 to 64 in | not made | not published | not published | 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
- Girlfriend Collective size guide, read on 2026-09-17. Girlfriend Collective on TrueToSize
- Gymshark size guide, read on 2026-09-17. Gymshark on TrueToSize