Would a breast augmentation fill this area and create more volume?

Yes, an implant can be used to create upper pole fullness. Generally the higher the profile of the implant, the more upper pole fullness you will achieve. Implants can be placed above or below the muscle to create this fullness.Depending on how much upper pole volume you are hoping to achieve, fat transfer may be another option for you.

In most patients in your situation, a breast implant will restore volume and shape. Since your breasts required a lift previously, your tissues may be a little more susceptible to sagging over time. However, that is hard to predict without an in-person examination. The best thing to do is to have a few consultations with board certified plastic surgeons in your area and see what will work best for you.

Only significant weight change or the milk of pregnancy will exacerbate sagging-not implants. I recommend an in person consultation with a plastic surgeon to discuss your goals and be measured. After I measure and discuss goals with my patients, we then look at pictures of women (my patients) with similar measurements with different size and style breast implants, and they choose what looks right for them. They also get to see what they would look like when the breasts have fully dropped and fluffed and in clothes. You get to see actual results and the surgeon's experience and not a virtual idea of what can be achieved. Women tell me that this process is very helpful in determining what size and style breast implant is right for them. Dr. Ted Eisenberg, Board Certified Plastic Surgeon and Author. RealSelf Distinguished Hall of Fame Inductee. Philadelphia, Pa., USA

Dear CG84,
I almost always place implants submuscular. It lowers the rate of capsular contracture significantly. In addition, it looks much more natural because the muscle provides covering over the implant so its not as round on the top. I've also noticed the implants drop less over time when they are protected under the muscle.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

It's difficult to provide a recommendation without an exam or photos. Typically breast implants do a great job of restoring upper pole fullness and replacing lost volume from weight loss. My patients generally prefer the implant to be placed beneath the muscle. This gives a more natural look, disguises the upper portion of the implant, and decreases the likelihood of capsular contracture. I encourage you to visit with a board certified plastic surgeon near you for a consultation to learn more.

You could go with implants placed behind the muscle for more upper breast fullness and choose a size that is not too large.

Dear CG84,
Thank you for your questions and congratulations on your weight loss! It is not uncommon to lose some volume in the breasts following weight loss. An implant certainly can add volume back. Depending on the volume you choose, skin tightening might also be beneficial, even if the nipple position doesn't need to be elevated. The implant can be placed under or over the muscle, both giving upper pole fullness. I suggest you seek out a board-certified plastic surgeon who can see you in consultation and develop a personalized plan to meet your goals.
Hope you find this helpful and wish you well!

Without pictures it is difficult to give you a full answer, but augmentation can restore the volume loss with your weight reduction. Size and positioning are best decided at examination, during a consultation.
I would suggest making an appointment with a member of the British Association of Aesthetic Plastic Surgeons, to be properly counselled