Stand with your feet two to three times shoulder width apart and your feet facing forward.
Turn your left foot sideways and bend that knee to drop into a side lunge, keep your right leg perfectly straight.
Push your right hip down towards the ground and lean your torso to the right until you feel it through the inside thigh of your right leg.
Hold this position for at least 15 seconds, then switch leading legs and repeat.
This Inner Thigh Stretch focuses on increasing the range of motion of your hip by stretching the groin, which allows more lateral movement of your leg.
Find this stretch and more here: http://www.yeschiropractic.com.au/stretches/