Firmestra herbal breast pills rated the best for increasing breast firmness, as the name indicates. As the breasts grow, the new tissue helps the breasts to be rounder and firmer. Many of the women noticed a boost in their libido/sex drive as well, a natural side effect from the herbs. This company offers a great guarantee, which we find encouraging. This company is well-established and trustworthy. They have earned high marks for their superior customer service. The average growth that our volunteers experienced was 1 full cup size within 4-8 months. You can always try a 4 month supply, and order more if needed. No adverse side effects were reported other than breast sensitivity, which indicates that the breasts are growing. This can be compared to the breast sensitivity when you are menstruating.