Hi Pande13.
Thank you for posting your question on breast reduction.
Although mainly a functional procedure (reducing the weight of breasts in order to help with back/neck aches), the aesthetic outcome is equally as important in breast reduction surgery. Your plastic surgeon needs to know what your desired size is. No one can absolutely guarantee the eventual size, since various factors such as scarring, fat atrophy, and leaving enough tissue to keep the nipple complex viable, can impact upon this. Having a mutually agreed goal in size however, will help toward achieving your desired result.
All the very best.
Dr Ray GohValley Plastic Surgery