20*20(Double -layer)
1
Measure Your Bust Size
Bend your body forward at about 45°. Take the measuring tape and measure the circumference of your body around the fullest part of your bust, typically where your nipples are.
2
Measure Your Under Bust Size
Stand up straight, then take the measuring tape and wrap it around your ribcage, just under your bust. The measuring tape should be parallel to the ground.
3
Note:
Your Cup Size = Bust Measurement - Under Bust Measurement
