Like many royals before them, public displays of affection between the Prince and Princess of Wales are rare.
But in recent months, they've appeared much more tactile in public - and at a charity polo match they were spotted kissing. The married couple kissed each other's cheeks as Kate presented William with a trophy for taking part in the fundraiser - with the princess also giving her husband a cheeky arm squeeze.
But despite the PDA, a body language expert believes that one half of the pair is much more comfortable expressing their affection in public - while another seems to hold back.
