Kate Middleton sets tongues wagging with her mysterious kiss to someone

Prince William's sweet wife Kate Middleton has sparked reactions with her mysterious gesture during her recent outing for a big event.

The Princess of Wales was seen blowing a kiss to someone she knew from the crowd at Wimbledon, leaving fans guessing the person who received that.

Princess Kate's gesture set tongues wagging, with some presuming they could members of her family, although it is not known who she was aiming at.

Commenting on the sweet moment, body language expert Judi James said that there are "two clues" who Kate might have been looking at and blowing kisses to: "Firstly there’s her smile as she looks across."

Judi observed: "This is clearly a very authentic smile of warmth and pleasure at whoever’s eye she has caught."

Also, "the style of smile suggests it is a ‘pinging’ smile, i.e. one she is returning as an acknowledgement of their smile".

At one moment, royal fans were in hysterics to look at William’s face when Princess Kate enthusiastically spoke to the Happy Valley star  James Norton.