Reduce gap between breasts only through Uplift? 20 yo,natural 34 D boobs that have become saggy through weight loss.

Hello and thank you for your question. Based on your
description, a breast lift may be able to accomplish what you are looking for. The most important aspect is to find
a surgeon you are comfortable with. With good surgical technique, you could
have an outstanding result. I recommend that you seek consultation with a
qualified board-certified plastic surgeon who can evaluate you in person.
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon

On category of qualified patients for breast lift includes those who have had weight loss, again, through either diet
or surgical procedure. And a lot of women, when they lose weight, their breasts
will lose weight, and they, again, may have some sagging of their breasts.A mastopexy or breast lift
operation is designed to improve the shape and position of the breast without
reducing their size. It is used for breasts which sag or droop (ptosis). Some patients will have a
better shape to their breast such as increased superior fullness if an implant
is used at the time of mastopexy. The procedure can also be combined with a
minor breast reduction to reduce the breast width if desired. The surgery will
create an elevated, more youthful breast contour. Also, the procedure will
create nipple and areolae of the desired size and at the correct height.Without pictures here, the best option is to look around for local surgeons and schedule consultations regarding the best procedures that will meet your desired final results. Best of luck to you! 

I believe that the only thing that will significantly improve cleavage is an implant, unless you have very large breast and a reduction/lift is performed.  I would recommend an
in-office examination as well as a detailed discussion with a board certified
Plastic Surgeon.
Best wishes!
Dr. Desai
Harvard Educated, Miami Beach and Beverly Hills
Trained Double Board Certified Plastic Surgeon