How women's breasts become bigger when they are small depends on the specific situation, because women's breasts are breasts, which are mainly composed of fat and breast milk. Their size has individual differences and is related to physical fitness, body size, genetics, and other factors. If you are in adolescence, breast development is not yet complete, but it can gradually develop and increase. Lactating women secrete estrogen to stimulate breast development, so the breasts of such women may also increase to varying degrees.
However, if the breast development is small due to thinness or genetic factors, the breast can generally only be enlarged through surgery. Note that surgery should be performed in a professional hospital. There may be certain risks in the operation, including inconsistent breast shape on both sides, postoperative infection, and rupture of the prosthesis. It is recommended to consider this carefully.
Women with relatively small breasts can also improve the overall appearance of their breasts in the following ways：
Choose the right underwear:
You can choose pure cotton breathable and supportive underwear, and lift the chest as a whole by shrinking the shoulder straps. Pay attention to the tightness between the shoulder strap and the skin that can pass through a finger. Wearing underwear too tightly is not conducive to breast development.；
Improve posture:
Raise your chest when walking, open your shoulders, and avoid hunchback with your chest; straighten your waist when sitting to avoid collapsing your waist; avoid putting your hands around your chest and sleeping on your back, so as not to compress your breasts, which is not conducive to blood circulation in your chest. After working for a long time and after labor, you need to combine work and rest, take more deep breaths, and do chest enlargement exercises；
Exercise the chest:
Common exercises such as running, aerobics, push-ups, and some professional fitness equipment can help exercise the chest muscles, especially the pectoral muscles, and improve the overall senses of the chest. The breasts can be visually enlarged. Pay attention to practicing under the guidance of professionals to avoid damage.；
Improve diet:
Eat a protein-rich diet such as beans, eggs, milk, and fish appropriately to promote fat accumulation in the breasts, which is conducive to increasing breast fullness and elasticity.