The goal of breast augmentation is to create an aesthetic breast with the size, shape, and projection that is desired by the patient. During a breast augmentation consultation, measurements of the breasts are used as a starting point to recommend a breast implant. For more info, see the link below.The decision on size, shape, and position of these implants is based on the patient’s anatomy, the type and size of the implant, and patients preferences. The creation of a tear drop or "natural" shape to the breast is influenced more by the position of the implants and the amount and quality of the surrounding tissue and less by the filling of the implant - saline or silicone.A detailed examination will help delineate the best surgical treatment. In office sizing and digital three-dimensional computer simulations can help guide your implant choices. Consultation with a plastic surgeon certified by the American Board of Plastic Surgery would be the next best step.
Implants will look different on different bodies. It is possible to get a fairly natural tear drop look with saline so long as you have a starting point that favors a tear drop shape and you use a conservatively sized implant. Visiting a board certified plastic surgeon who does a lot of breast augmentation would be your first step. In my practice I find that 3D imaging is an amazing tool to discuss shape related questions.