Take your true size, or size up for increased coverage.
Model is wearing a size XS.
Model Measurements: Height: 178 cm, Waist: 58.4 cm, Hips: 87.6 cm, Bust: 80 cm
Product Measurements (Size S): Under Bust Width: 43.18 cm, Cup Height: 13.97 cm, Strap Length: 45.72 cm