The model is wearing size S/M.  Model's measurements: height 164 cm, bust 88 cm, waist 62 cm, hips 90 cm  .   Dimensions of trousers in size S/M: waist width - 36 cm (flat),  waist width - 64 cm (when stretched),  hip width - 51 cm, waist height - 36 cm, total length - 108 cm.