The Princess of Wales won't be a Queen in her own right but she's learnt some valuable lessons from Queen Elizabeth that she's putting to good use. Of all the late Queen's skills and qualities, we often don't think about her aura of mystery.
The way she presented herself in public was all most people ever saw and she was an expert at keeping her true feelings to herself. Now royal biographer Catherine Mayer has suggested that the Princess of Wales has taken this smart approach too.