Hip Stretches:

Method:
Lie on your back on a comfortable surface. Bend the left leg so that the knee is raised up off the floor while keeping the left foot on the floor. Bend the right knee and cross the right ankle over and just above the left knee. Grasp the left leg just under the left knee with both hands. Pull the left knee along with the bent right knee toward your chest as far as possible until you start feeling a slight stretch (light pain).

Affected Body Part:
Most-stretched muscles on right side of body: Gluteus maximus, gluteus medius, gluteus minimus, piriformis, gemellus superior, gemellus inferior, obturator externus, obturator internus, quadratus femoris, lower latissimus dorsi, erector spinae. Lesser-stretched muscles in left leg: Gluteus maximus, gluteus medius.

You can do this stretch while in a sitting position, but it is less effective and more difficult to maintain balance.