17 Year Old Female - Boobs Are Saggy and Uneven?

Unfortunately, breast asymmetry and sagging is very common. Treatment for cosmetic improvement will require a  breast lift which treats the sagging aspect.  A small reduction can be performed on the larger side to even out the differences. Scars on the breast would be the trade off, but they fade over time. Certainly, as you continue to age, have children, and weight fluctuation, there is always the possibility for appearance changes in the breasts. I would consult with a board certified plastic surgeon to see what would work best to enhance your look. 

If you have this much assymetry at age 17, you probably won't get magically better.  We often see young women who have this problem.  Each case is individualized because the breasts are so different.  Some women just need a lift on one side, an enlargement on oneside, or a reduction on one side.  Still others will need surgery on both breasts to get the best result. 

Plan on making an appointment with a board certified plastic surgeon in your area and you can discuss options.

Good luck,

Dr T