In a 2007 survey conducted on cosmetic physicians in the States, researchers found that the average size of the implant used was to achieve a C cup with a volume of 300-400cc. At a whopping 96% of all implants, almost all were round and not contour.
Although it was done 2 years ago, not much has changed today. The average preferred change still remains a C cup, although the volume may differ according to the patient and how much breast tissue exists. Round implants are still popular as well.
The surveyed consisted of 1746 members of the American Society for Aesthetic Plastic Surgery (ASAPS) .
