Stiff as a board on Dancing with the Stars
From the waist up this woman is like hardened cement. Her neck and shoulders absolutely do not move. And that was a large part of what made the sex scene in the water so comical in Show Girls. There's just no fluidity in her upper body and she tries to cover it by jerking and flailing her hands and arms. The result is so NOT the same as smooth motion in the neck and shoulders.
Her legs work fine, but that's just nowhere near enough for dancing.