JIJI Studio is a Parisian label and uses alpha sizing XS–XL, including in-between sizes S/M and M/L, with body measurements in cm; trousers have their own chart by waist size 25–31.

Body measurements (cm)

Size Chest Waist Hips
XS 80–84 62–66 88–92
S 84–88 66–70 92–96
S/M 84–90 66–72 92–98
M 88–92 70–74 96–100
M/L 90–96 72–78 98–104
L 92–96 74–78 100–104
XL 96–100 78–82 104–108

Jeans & trousers

Waist size Waist (cm) Hips (cm)
25 62–64 88–90
26 65–67 91–93
27 68–70 94–96
28 71–72 97–99
29 73–75 100–102
30 76–78 103–106
31 79–81 107–110

How to measure

  • Chest: measure horizontally at the fullest point of the bust.
  • Waist: measure around the hollow of the waist.
  • Hips: measure at the widest point of the hips.

Source: JIJI Studio’s official size guide, checked 20 October 2026. Sizes can vary by style – if you’re between sizes, email info@willow.ie and we’ll measure the garment for you.