The best answer: it is not good to be big, and it is not good to be small. Want what suits you best. And underwear has a life span, usually up to one year or less. The role of a bra is to gather the chest, hold it up and delay the sagging trend. Wearing clothes bigger than yourself won't have any effect on the chest, and the cup bag is not satisfactory, so you can't hold your chest. How can I hold it high and fold it? If it is too small, it will not only affect the development, but also cause poor blood flow and even bury the hidden danger of mastopathy. Therefore, girls must not be hasty when choosing bras. Don't be stingy with money, you will regret it if you are willing to use it later now ~ so I suggest you go to a formal place to try it on yourself and buy one, whichever one is comfortable, as the case may be. If you like a thicker one, you can buy a bigger one. If you like a thinner one without a sponge, you will regret it. Personal opinion: don't choose the thick one with sponge, it will press the nipple, and the nipple will turn black or black easily. The big ones can be tightened ~ ~ the small ones can't be unfolded ... when they grow up, they are completely useless. If you are a middle school student, I suggest you buy a bigger one, but if you are an adult, you should buy something just right in size and style, because adults have already shaped their breasts. At this time, the role of the bra is to shape the chest. If it is too small, it is not good for the chest, which is not conducive to chest breathing and is easy to cause meat compression. A little bigger, but not too big, too big, easy to sag, you can't keep your chest shape.