You need to know this before you go under the knife, says Dr Oz.
Breast implants are placed either in front of or behind the pectoral muscles, depending on whether you want natural or porn-star-looking boobs.
The newest technique, which cuts through the muscle, allows the implant to hang very naturally but also makes it difficult for women to flex their pectoral muscles.
All implants carry a risk of breakage and leakage.
Breast augmentation distorts X-ray mammograms so you'll need a yearly MRI to check for breast cancer.
Implants don't last forever, so this is not a once-off expense. You will have to have them replaced every 10 years, so make sure you can afford it.
Catch Dr Oz on SABC3, Monday to Thursday at 3.45pm.