A wonderful hip opener as shown here by the lovely Fran.

Start sitting cross-legged  with the sit bones making good connection to the earth.

Lift the right leg encouraging it to feel loose and floppy and aim to cradle it just as gently as if you were rocking a baby. If you can’t bring your arm all the way around then hold at the knee and foot. If it is more comfortable bring the left leg out straight. Try to keep the back upright and the foot flexed.

Repeat on the other side for 10 deep breaths.

This a great mobilising stretch, try doing it before class starts!