Kim Kardashian just shared the ab workout she follows with trainer Melissa Alcantara, so obviously we’re scrutinizing it to see if it could whittle our waists to the enviable 24 inches Kim recently claimed as her size. If we could muddle our way through the below twice a week (as her trainer recommends) we’re pretty sure we’d be comfortable wearing bras as tops too. 1. Leg Lifts: Lay on a mat with your hands under your butt and lightly bend your knees with your feet hip-width apart. Lift your legs to create a 90 degree angle then gently lower them back to the ground. Four sets of 20 reps each.2. Plank Hold: Hold a plank for one minute, with 30 seconds of breaks in between, for a full set of 4 minutes.3. Ab Rolling: Start in a kneeling position with an ab roller, stretch forward in a straight line then roll back to the starting position. Do four sets of 10 reps.4. Kneeling Rope Crunches: Start in kneeling position, holding the rope on a cable fly machine to your temples, then lower your head to the floor lowering your butt to your heels (not the floor!) Do four sets of 30 reps with around 30 pounds of weight. See her doing the exercise here.