Bust cup size diagram
In the image, the Upper Bust measurement is 34 inches. The block for a B Bust cup (blue lines)will fit a bust of 36 inches – 2 inches more than the Upper Bust. The block for a C Bust Cup (green lines)will fit a bust of 37 inches – 3 inches more than the Upper Bust. Subtract your calculated band size (Step 1) from your bust measurement (Step 2) and View Diagram Bust cup size diagram