How can i get bigger ?

okay so im 14. and my s are just terrible. they cant even fill up an aa cup. i hate it so much. ive heard that eating really healthy will help, and other things tat say eating fast food will increase size.my aunt and grandma have like ds. in fact my aunts a victoria secret model. how is it that my are so bad. also, if anyone has tried it before, does the chi mage work. the one that is in the flat to fab program. if it works at all tell me.im super skinny, but not anorexic, just have a high motabolism and i cant gain weight much. i dont want bras or nothing. i just want to look nice in a bathing suit. tell me about anything youve tried and if it worked or not. and please, no lectures on loving my body. thank you