Unlike Prince Harry and Meghan Markle

never hold hands in public.

According to body language expert Darren Stanton, this probably has something to do with William's future role as king.

Prince William and Princess of Wales Catherine / Photo: Associated Press

As future king and queen, they are likely to follow the example of the late Queen Elizabeth II by avoiding public displays of affection during official meetings.

"Kate and William now play a very important role in the royal family as the Prince and Princess of Wales," he told The Sun.

"As they are next in line to the throne and prepare to one day become king and queen themselves, they use and follow the late queen's traditional royal protocols," express writes.

Prince William and Princess of Wales Catherine / Photo: Associated Press

However, despite the conservative approach, Kate and William found a way to show their feelings and love for each other in public.

We talked about this cute gesture that the couple makes earlier.

Prince William and Princess of Wales Catherine / Photo: Associated Press