Will the volume of implants "lift" the breast?

Depending upon the volume and projection of the implant placed, you will get a perceived lift of the nipple and areolar complex. If your plastic surgeon measures your breasts and finds the degree of droop or ptosis to be mild, an implant alone may be enough to help improve this look. If the degree of ptosis is moderate or severe, a mastopexy (surgical breast lift) would do a better job at addressing the problem.
So, in other words, visit a board certified plastic surgeon. Have a breast exam with measurements. If your ptosis measurement is more than 3cm, consider a breast lift with your augmentation.

Breast implants do not lift breasts, they only add volume. Unfortunately, you not provided photographs or told us your bra size. I would need more information to give you a more accurate answer.

Best Wishes,

Gary Horndeski, M.D.