Wearing a non-padded bra
Stand in front of a mirror and measure directly on your bra or while wearing a thin layer. Try to keep your back and shoulders straight and avoid slouching.
Bust Measurement Instructions
Wrap a soft measurement tape around the fullest part of your chest. The measurement tape will go around your back to the front of your bust and snug but not too tight.
Underbust Measurement Instructions
Wrap the soft measurement tape around the ribcage, right underneath your breasts. Make sure the measurement tape is horizontal and wraps tightly around your body.