Princess Beatrice channelled Meghan Markle in a surprise engagement. The Princess of York surrpised a young girl with leukaemia at her art exhibition at Christie’s in London. Poppy Blackburn, nine, was diagnosed with cancer when she was just three years old. During years of treatment, Poppy turned to art for comfort, and it was always her wish to have her own art exhibition. Make a Wish UK and The Art of Wishes helped make Poppy the youngest artist to exhibit at Christie’s in London. Photographs captured from Poppy’s exhibition showed Princess Beatrice, 35, surprising the youngster. The royal …