Whether it's in a bikini, a miniskirt or short shorts, your butt and thighs are bound to be on full display all summer long. So, if you want to look your finest, it pays to whip your lower body into the best shape possible. To this end, we tapped some of the best known personal trainers on the planet to get their go-to, results-guaranteed, best-pick moves for remodeling all parts south of the belly button in one, easy-to-follow workout.

To do this routine all you need is a set of dumbbells, a deck of playing cards and a chair. Do 1 to 3 sets of each exercise, and aim for 12 repetitions per set. Rest 15 to 60 seconds between sets. If you do this workout at least twice a week, you'll be rewarded with a firmer butt and shapelier legs when it's time to hit the beach.

Butterfly Pliés

Designed by: Ellen Barrett, star of the new exercise video Self Bikini Ready Fast! (Amazon.com)

The Payoff: Like all pliés, this move works the buttocks, hips and thighs. It also works your shoulders and arms and helps to perfect your posture.

The Setup: Hold a dumbbell in each hand with your arms in front of you, wrists crossed, palms facing in. Stand tall with feet wider than hip-width apart, toes angled outward and knees aligned with toes.