3. Jessica Biel
While many of the butts on this list are courtesy of genetics, you can tell that Jessica Biel’s curves are a product of many hours at the gym. Her assets are incredibly firm and toned, something that is a huge inspiration for all women clocking in hours at the gym, because let’s face it – if you’re not blessed with a sizeable butt, it can sometimes be discouraging to see all the stars shaking their nature-given money-makers. Biel proves that you can spend time building up your physique and, after enough hours of yoga and weight lifting, you’ll earn those curves – and it’ll be twice as sweet to finally fill out those bodycon dresses and painted on jeans.