Ever caught yourself envying J.Lo’s derrière, or Lea Michele’s toned tush? If so, you’ve come to the right place: Below, we’ve collected the go-to butt workouts of celebrities with famously sculpted booties. Of course, DNA plays a big role in the shape of one’s backside, and these stars are blessed with exceptionally good genes. But you can still borrow their moves to attack the muscles hiding deep under your glutes, for a firmer, tighter behind. From Sofia Vergara’s high-knee step-ups to Kourtney Kardashian’s resistance band circuit, these exercises will bring you closer to the of your dreams. So back away from the padded Spanx, and read on to learn how to build a better bottom.