By Jennifer Newton The Princess of Wales gives away several subtle gestures in a new video that should quash cruel online rumours about her, an expert has claimed. Kate has been captured in a video smiling and chatting happily with Prince William during a trip to a shop in Windsor, amid her recovery from abdominal surgery. The footage, which was taken at the Windsor Farm Shop on Saturday, shows Kate carrying a bag of shopping along with William, who also carries a bag, as they make their way out of the shop and into the car park. The clip was captured by an onlooker, who spotted the pair and d…