When Meghan Markle walked down the aisle on her wedding day, she had a secret that Prince Harry knew nothing about. Mixed in with the silk and tulle fabric of her 16-and-a-half-foot veil was a piece of the navy dress she wore on her first date with her prince. It was the “something blue” that she incorporated in her wedding day ensemble. The Duchess of Sussex revealed the secret in a new documentary on her grandmother-in-law Queen Elizabeth called “Queen of the World.”