Sexy celebrity Kim Kardashian teams up with personal trainer Jen Galardi to offer this butt-busting workout designed to lift and tone your derrière, including a fun but challenging 15-minute regimen of squats, lunges, steps and jumps. Next, a 20-minute routine increases the intensity and pace of the workout for enhanced results, and a final bonus segment uses advanced techniques to whip your behind into shape in no time.