Input needed for breast augmentation. What size implant should I go with? (Photo)

It is critical that you find a plastic surgeon who knows breast aesthetic surgery very well. There are very specific measurements that guide a surgeon to select the appropriate size implant for each individual breast/patient. I recommend finding a surgeon who uses 3D imaging preoperatively to eliminate any doubt on what things will look like after surgery. Please see attached video.

To determine the size of the implant, an examination is important and various factors must be checked. Chest width, thickness of tissue, nipple to inframammary fold distance (resting/maximal stretch), degree of ptosis, size desired by the patient, etc. must be known, and the appropriate dimension may vary depending on the surgical method.

During the surgery, a sizer - a temporary implant, is used by adjusting the amount of saline injected to determine the optimal size of the implant that will give it the prettiest shape.
You should consult a plastic surgeon via 1:1 consultation and discuss the size and dimension of the implant during your consultation. Still, if we roughly estimate it, you would need an implant of 250 to 350 cc.

I'd suggest using 3D breast implant imaging. The technology can be used to view both implant volume and profile. Based on your photos I'd do a low plus or moderate profile; 250 - 300cc volume.