Getting a bigger bum isn't something that will happen overnight. It requires dedication, patience and hard work to achieve the results you desire. Depending on your starting point, it could take anywhere from 4-12 weeks to see noticeable differences in your lower body. To get started, make sure you are sticking to a consistent exercise routine that incorporates strength training exercises such as squats and lunges along with cardio activities like running or biking. In addition to exercise, proper nutrition is also key when trying to build muscle mass in any area of your body including your glutes. Eating foods high in protein and healthy fats can help fuel the muscles so they can grow larger and stronger over time. Remember that consistency is key - if you stick with an effective workout plan for 8-12 weeks while eating nutritious meals, then you should begin seeing changes in the size of your butt!