Hello, wearing this bra at this time will affect the development of adolescence, thus causing certain harm to the body. When these sexual characteristics are formally developed in adolescence, if you gird your breasts, this situation will hinder the development of breasts and affect the normal development of breasts, thus having some impact on breastfeeding in the future.
Therefore, you should face up to this situation, wear less body shaping clothes and avoid getting hurt. In addition, puberty is coming, and all parts of the body begin to develop under the action of hormones. We should face up to these developments, instead of making them bigger and limiting our natural development in some way.