Lighting "Seinfeld phenomenon"

I’ve had iClone for a week now and am going thru the learning process. In this instance, i have a character that in one scene looks attractive, then in a different scene she is struck by the “Seinfeld phenomenon” of appearing very different due to different lighting and reflections. Just a lesson for me. The task now is to recreate the attractive lighting and make it follow her movements. (I wonder if people using AI have this sort of problem)