The authors describe four characteristics that determine attractive buttocks in addition to the balanced anatomical dimensions of the maximal point of gluteal projection. Based on this information, defects of the gluteal region can be classified into five types. The most appropriate size and shape of gluteal implants and the proper surgical technique for gluteal augmentation can be chosen by first identifying the buttock type of a patient. The proposed method of buttock classification helps achieve a gluteal contour that closely matches the standard of beauty.