The outer thigh lift is a great way to work the butt. Whenever leg abduction (movement away from the midline of the body) takes place, the gluteus muscles are involved. Instructions for the outer thigh lift are as follows:

Lie sideways on an exercise mat. Place your arms in a comfortable position. Bend your bottom knee. This will allow you to perform a full range of motion. Slowly lift your top leg at least 45 degrees or greater. Lower your leg back to the starting position and repeat the exercise. Perform the outer thigh lift on both legs. For a challenge, try securing rubber resistance tubing around your ankles.