Brava. Only proven method is with the brava system wich provides augmentation with negative pressure. A newer method is to perform fat injections.
None that are. Are both safe and effective.
Fat grafting. There is a suction device which can enhance breast size but it is likely temporary and impractical. Fat injection is the new developing field and will likely be the best answer for moderate size increase. Unfortunately there is still some medical-legal debate and few doctors offer this except in reconstruction.