1. Measure the bust size first. Women's chest circumference will change a little at different times. It's best to measure underwear first every time, so that you can choose according to your personal characteristics.

2. It's best to buy it at a counter or a specialty store. After professional training, the shopping guide there can give detailed and effective guidance on whether underwear is suitable for trying on;

3. Pay attention to the texture of underwear and the elasticity of shoulder straps. Shoulder straps should not be as tight as possible. Too tight, the ugly deep marks on the shoulders will affect the appearance. Pay attention to its elasticity, it is not easy to deform after stretching. When you try it on, you can hold your chest out without making yourself feel uncomfortable. It is a good shoulder strap.