Take all measurements over underwear only, using a soft tape measure. Keep the tape snug but not tight.

Measurement 0 1 2 3 4
IT size 44 46 48 50 52
Height (cm) 178 180 182 184 186
Chest (cm) 88–92 92–96 96–100 100–106 106–112
Waistline (cm) 70–74 74–78 78–82 82–88 88–94
Low waist — 8 cm below bellybutton (cm) 76–80 80–84 84–88 88–94 94–100
Hips (cm) 90–94 94–98 98–102 102–108 108–114
Center back to wrist (cm) 82–85 85–88 88–90 90–93 93–96