I'm not sure what you mean?

Are you referring to making figure poses?  If you are the rule of thumb is to take your clothing off and look in a full length mirror as to how the body moves.  The hip is the centre of gravity and tends to remain stationary. The turning movement actually comes from above the hip area at the waist, or the joints of the hip. But the pelvis itself remains in place.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi