At Phlexx, the majority of our clients want to build the booty and strengthen their legs. For leg days we isolate certain muscles groups and add intensity with supersetting two exercises. The example below shows Australian model Jessica Cribbon demonstrating a barbell split squat with 65 lbs followed by a single leg step-up with kickback using 5-15lb dumbbells.
Split squat - 12 reps per leg
Step-up w/ kickback - 8 reps per leg
*All workouts are executed after properly warming up.