A breast lift is really the only option. There is short scar, peri-areolar, and traditional inverted T scars depending on the examination, the amount of droop and the amount of lift wanted, the size of the breasts, and weight of the patients. A small amount of tissue can be removed if you want a slightly smaller size.
The trade off is scars, potential change in sensation, and ability to breast feed. The scars can settle unevenly, and nipples can have healing problems. Many patients decide not to have a lift because they dont want any scars. It is very important to quit smoking or the nicotine could cause tissue to die.
A breast lift is a good operation for someone not minding the tradeoffs but does not have the simple, hidden scars of implants. However, implants make you larger and only correct small amounts of droop.