The Spencer Tiara once belonged to Diana's grandmother and was worn by both of Diana's sisters (Lady Jane and Lady Sarah Spencer) on their wedding days. The white gold and diamond crown was a favourite of the Princess' and she continued to wear it throughout her life.
Diana wears the 'Spencer tiara' in 1987.
“Diana was very proud of her Spencer heritage and I think Harry will like his future bride to carry this tradition on. She will not own the tiara but will have the choice to wear it if she wants to," the Will & Harry biographer continued.
"If not, she will certainly be loaned a tiara on her wedding day. Harry will present her with a necklace or something from his mother’s collection,” Seward told US Weekly.