The model is wearing size M. Model's measurements: height 167 cm, chest 73 cm, waist 64 cm, hips 91 cm.   T-shirt dimensions in size M, measured flat: width under the arms - 55 cm, total length - 67 cm.   The dimensions of the T-shirt size S are measured flat: width under the arm - 53 cm, total length - 64 cm.