Getting a bigger butt is simple science. Your hips are made of muscles and fat. You have to work on the muscles gluteus maximus gluteus medius and gluteus minimus to build and tone them up. For bigger rounder and firmer buttocks make sure to take care of the fat layer above the muscles as well. Depending on the current amount of fat around your buttocks you will either have to shed or gain fat. That wasnt rocket science right? Lets get to the main part how to get a bigger butt fast.