I want bigger boobs, but without medical treatment

I want to have bigger breasts without having a medical treatment and without paying anything and without taking any medication, too. I really don't want my mom to know. I'm 13 and I'm still as flat as a board. I think people look at me weird because I'm so small. My dance teacher measures people for costumes and I have the smallest measurement of them all. There is a girl at my church who is 10 and has bigger boobs than I do. I would like something that will work as fast as possible, but not make people think I'm wearing tissues or something inside a bra. I would like some excersise or something I can do at home alone without anyone knowing but will be effective enough to make them bigger. Please respond as soon as possible.

I've researched allot on how to get bigger breasts. I heard that, if you eat lots and lots of FRUITS! your breasts will grow like magic. but there's no excersise for bigger boobs. I hope this helps

Kirsty your to young to be worrying about such... let em' look at ya weird. I'm 30 & I'm yet as flat as a board like you put it. Apparently God thought the size he gave was meant for me. My 12 year old sister has em' bigger than me, but oh well. She's also bigger than me everywhere. Love yourself girl.

Hey, your 13. Give it time... heck, when i was thirteen i had bigger boobs them most girls, and then they outgrew me! Haha.

Honestly girl , you are far too young to be worrying about this !! Some people start later than others . You might overtake them ok . Relax !