Expert answer:
It is possible to increase the volume of the breasts naturally if there is an increase of the mammary fat due to the gain of weight and / or increase of muscle mass of the mammary region (pectoral muscle) by means of localized physical exercises.
The breasts grow and develop during the course of puberty. Some women show a slight breast development and the breasts seem to have stopped growing at a young age. In some cases, the use of female hormones present in some pills may stimulate further development of the breasts.
Other practices such as the application of breast products, although widely publicized, have no evidence of safety and efficacy.
The gynecologist and the endocrinologist are the specialists to be consulted in these situations.
