The model is wearing a size S/M. Model's measurements: height 173 cm, bust 89 cm, waist 65 cm, hips 91 cm.
Measurements of the shirt in size S/M measured flat: width under the armpits - 50 cm, sleeve length - 12 cm (from the seam), width at the hips - 50 cm, total length - 49 cm.
