How can I tell my family?

How you tell (or if you choose to tell at all) is up to you. All families will react differently.

You can begin to tell them how you feel regarding your appearance, about your lack in breast size making you feel less feminine, etc.

Make a list of the reasons you want breast augmentation, go over these reasons in your head.

Let your family know how you feel, they may not be completely supportive at first - but they usually come around.