Conspiracy theories about Kate Middleton have been squashed by a man who said they're "ridiculous", after taking a video of her at the farm shop.The dad said the Prince and Princess of Wales looked "very happy and relaxed together" amid claims that it wasn't really Kate in the clip began circulating. Nelson Silva, 40, captured the moment Kate stepped outside for a quick trip to the Windsor Farm Shop on Saturday, 16 March as she walked side by side with Prince William.The video sparked numerous conspiracy theories about her whereabouts, with many claiming the recording was of Kate's lookalike instead. But the father, who was out shopping for steak when he saw the royal couple, said the social media users behind the rumours are "delusional", reports the Mirror.