First thing is this is all natural and girls, you don't need to Increase or decrease the size cz cm'on it's ur fuqin body organ not a toy or wht.. I've seen men spending thousands on oils or cases to increase their penis size but nothing succeed..
Although I suggest you to a regular frequent massage from coconut oil. It not only reduces blemishes and makes your chest super cute and attractive (even if it's flat) but increases blood flow which led to increase your size in respect to time. Frequent massages will push your harmonal activities and breast size