I think you can continue to wear the elastic half vest that you feel most comfortable with. The reason why I have a pair of breasts is probably because I wear a small vest for a long time, just put it on, and I don't pay much attention to the shaping relationship. The so-called shaping means that after putting on the vest, all the auxiliary breasts near the armpit are squeezed inward, so that the vest wraps it with the breast, so that there will be no auxiliary breasts.