Charlize Theron's derriere: Secrets of an A-list body

PUBLISHED: 17:22 EST, 9 April 2012 | UPDATED: 17:22 EST, 9 April 2012

We reveal how to get the enviable physiques of the stars. This week, actress Charlize Therons bottom.

Shes just adopted a baby boy called Jackson, but Charlize Theron is showing no signs of letting her fitness regime slip.

She was recently spotted hitting the gym displaying a particularly pert posterior.

Theron weight trains, attends yoga classes and runs.

Superfit: Charlize Theron weight trains, attends yoga classes and runs

TRY THIS: Bottom lifts are perfect for toning the buttock muscles. Lie on your back and place your feet hip-distance apart with knees bent.

Put your arms beside your hips with your palms down.

Inhale and as you exhale, tilt your pelvis and squeeze your buttocks as you slowly lift up your hips as high as they will go.

Charlize Theron goes to the gym

Charlize was recently spotted hitting the gym displaying a particularly pert posterior

At the top of the move you will be resting on your shoulder blades, with your body in a straight line from your knees to your head.

Lower and raise your buttocks about eight inches.

Repeat 30 to 40 times.

Charlize Theron