It takes trial and error doesn’t? before you find just what is right for you. Your build – that is what is key to achieving proportionality.
What a lot of girls don’t realise is that forms manufactures sizing charts are usually based on a 34″ female chest. So their C cup forms are two or more sizes too small for a larger chest size.
By much experimentation I have found an E cup, or 1400 gms a pair forms, gives me a generous C cup with my 40″ chest.
Ahhh…. balloons. I remember them well. With a double or triple knotted neck they gave an outstanding pointy presentation. They used to last quite well until they perished, and went out of shape. More than once I got a soaking.
Then I got my first pair of forms ……..