Sarah Ferguson has issued a touching statement to her “dear friend” Princess Diana on what would have been her 63rd birthday. The Duchess of York shared a snap of the pair standing stand-by-side on the balcony of Buckingham Palace in 1990. She wrote: “Happy birthday to my dear friend, Diana. You were a pillar of light and love. And what a legacy you have left behind. I will forever remember our laughter and the kindred, kind spirit I found in you. “I am sure you are watching over us always. Rest in peace my friend.” Fergie and Diana were snapped on the balcony as they commemorated the 50th ann…