to build a muscular butt you have to be dedicated to working out. i used to have a boney ass with no meat on it. it took 4 years at the gym doing squats 4 x a week, running 40 minutes, 3x a week and eating healthy to build it into a meaty treat. its not the best butt because of my body type, but its 100x better than the boney ass i had in my late teens / early 20s. i also work other muscle groups too. squats were the best for the butt but work your thighs too. it helps make the butt look more defined with muscular thighs. i mean if your serious its gonna take dedication. believe me. change your eating habits to a mostly whole food diet and the zits will clear, workout at least 4 x a week for a couple hours each time and dont shave your body hair!!! thats creepy!!!