Dear customer, thank you for your interest. Our product is in a regular (standard) mold, you can generally go for the size you use daily; however, we cannot give a clear size guidance. Our model's measurements: - Height: 1.65 cm - Chest: 80 cm - Waist: 60 cm - Hip: 90 cm - Wearing size: S Since your chest measurement is 113 cm, it would be best to choose between XL and 2XL based on your comfort preference. If you want a looser or more fitted look, please review the size chart and customer comments. So that you can choose the most suitable size for you more healthily.