Dear madam, Such a concept , does not exist, however there are few elements that surgeons and patients strive to, in order to achieve attractive breasts : 1. Nipples should be above the IMF (infra mammary crease ) between 7 - 11 cm ( according to breasts size). 2. The distance between the nipples should be close to the distance betweem the sternal notch and the nipples, creating equidistant triangle. 3. Soft and mobile breasts. Displacement massage is critical to achieve this goal as well as diet that reduces blood thining that can cause capsule contracture. 4. natural slope of upper pole. 5. nice cleavage. careful dissection is importants. 6. the ideal size according to some studies is a C cup, however , ethnic back ground and culture determined the desired size. In my practice the most popular size is full C cup. 7. Scar location should be the least noticable. In my opinion, the sub areola is the best option because it is scar friendly and allows the surgeon to create the cleavage under direct vision and fingers feel. 8. Implant's type varies between - Saline, silicone gel and cohesive gel ( gummy bear ). In my opinion saline option is the best for too many reasons to discuss at this tome. 9. pocket location - sub glandular ( on top of the muscle) or sub muscular. The 2nd option is superior because of better tissue coverage of implants and higher percentage of nipple sensation maintenance. As you can see , your question is quite complex and you have to do your due diligence. Always, consult with board certified plastic surgeons who operate in accredited surgery center for your safety. Most importantly, check the before and after picture to make sure that they are numerous, consistent and attractive. Check also the 'reakself' reviews for positive patients experience which provides important information on the surgeons. Best of luck, Dr Widder