How big do you think a 520 cc silicone implant under the muscle will be? I am 5'7" and about 120 lbs. (Photo)

Hello, there is no perfect correlation between implant size and final bra size because a person's own breast tissue has an effect on the final size.  Rather than focusing on cup size, surgeons will often as the person to look at before an after photos, or use other techniques like Vectra 3D imaging or sizers.

Hello,Thank you for your question and photo. My patients find it helpful to try on sizers in a sizing bra at my office with a form-fitting T-shirt. This gives you a 3D picture of what the volumes look like on you personally as everyone's frame, measurements and existing breast tissue will affect their results.All the best

Thank you for your question and photos.  520 cc's will give you a significant increase in volume.  To get a good idea of what you will look like, please as your board-certified plastic surgeon to "try on" the implants.All the best,Dr. ResultsMiami, FL