Bras are generally suitable for summer wear, because there is no thick sponge, which is more breathable. You can wear transparent sunscreen directly, without wearing a T-shirt, and you can also wear a bra alone when exercising in the gym. Bra gathering effect is obvious. If you want to make your breasts smaller, you can choose a bra, which will look good in summer.
The minimum size of a bra is size 32. For petite girls, a size 38 bra is suitable for girls with big breasts. Size does not refer to cups. Girls with smaller bust can wear A cups. Be sure to combine your usual size, not too big or too small. Just choose what suits you.
If it is too big, there will be no aggregation effect. After a long time, there will be auxiliary breasts, but if it is too small, it will feel tight and harmful to the breasts, so you must buy a bra of the right size. Generally, when you buy a bra in a specialty store, you can try it on. If you don't know the size, you can ask the shop assistant for help.