© @Copyright HELLO! Hello! Magazine Back in February, the Duchess of Sussex made a surprise appearance during Prince Harry's chat with James Corden – and ever since fans have been clamouring to get their hands on her cornflower blue dress. With the 'Meghan effect' in full swing, her summery smock has since sold out, but Marks & Spencer has unveiled a strikingly similar design – and we're adding it to our baskets ASAP.