Choosing a breast implant size is a measurement problem, not a shopping problem. The implant has to match the width of your breast and the amount of tissue covering it. A cup size written on a form does not capture either of those. Your surgeon reviews both measurements at a consultation for breast augmentation in Miami.
Start with the breast you have
The surgeon measures the base of the breast, from the cleavage side to the side of the chest. That distance is the widest implant that can sit behind the breast without hanging off the side. Tissue thickness comes next. Thicker cover hides the implant. Thin cover shows edges and ripples, so a more moderate size is often the one that still looks soft.
The fold under the breast, the position of the nipple, and whether one side is smaller all change the plan. If the nipple already sits low, volume alone will not lift it. That is a different conversation from size.
How to describe the result you want
Photos help when the person in the photo started with a chest like yours. A result you admire on a taller or narrower frame can be the wrong volume on you. Say what you want in the clothes you wear most: a filled-out top, a difference that is easy to see, or a change that is quiet under a work blouse.
Some offices let you try sample volumes in a bra. Treat that as a preview of weight and fullness, not a promise of the final shape. The implant also sits under tissue or muscle, so the look in a bra in the consult room is not the look on the operating table.
Width, profile, and volume
Implants are described by volume, width, and profile. Volume is the amount of fill. Width has to respect your breast base. Profile is how much of that volume projects forward. Two implants with the same volume can look very different if one is wider and flatter and the other is narrower and taller. Ask to see the width, not only the cubic centimeters.
Common questions
Can I just ask for a specific cup size?
You can say the cup you hope to wear, and the surgeon can translate that into a range. Bra sizes are not precise enough to pick the implant by themselves.
What if I am between two sizes?
Look at tissue cover and at how you want to dress. The size the skin can cover without strain is usually the safer of the two. Bring photos of both looks so the choice is about your chest, not a number.
Will the size look the same the week after surgery?
No. Swelling and the position of the implant both change in the early weeks. The size you agreed on is the implant, not the shape you see while you are still swollen.
The operation and what a package covers are on the breast augmentation page.