Princess Diana feared Prince Harry would wither in Prince Williams shadow: expert

Princess Diana feared Prince Harry would struggle to find his place in the royal family while growing up in the shadow of his older brother and future king Prince William, according to a royal expert.

The late Princess of Wales concerns about her sons are back in the spotlight amid news of the upcoming three-part documentary "Diana Unheard," which will feature never-before-heard audio from roughly five hours of secret recordings that Diana made with her friend Dr. James Colthurst in 1991.

The documentary's producers told Deadline that the recordings, which were used in Andrew Mortons explosive 1992 biography, "Diana: Her True Story," include the princess speaking candidly about her sons, William and the line of succession, as well as her troubled marriage to then-Prince Charles and other aspects of royal life.

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While speaking with Fox News Digital, British royals expert Christopher Andersen shared his view that the recordings could reveal Diana's long-held concerns about the vastly different paths awaiting her sons.

"Diana worried from the beginning that Harry might wither in the shadow of his brother the future king," the "Kate!" author said.

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"Even at a young age, William shared his mother's concerns and for the most part took great pains to spare his brother's feelings," Andersen continued. "It's very telling that, in his last conversation with Diana just hours before her death, William expressed his fear that a photo opportunity at Eton might leave Harry feeling ignored."

at age 36 in August 1997 after suffering injuries sustained in a car accident in the Pont de l'Alma tunnel in Paris, France. Her partner, Dodi Fayed, and the driver, Henri Paul, also died in the crash.

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Hours before her death, Diana called William, then 15, from her hotel in Paris, according to Morton's biography. During what would become their final conversation, William reportedly told his mother that he had been asked to participate in a solo photocall to mark the beginning of his third year at Eton College and shared that he was deeply concerned the high-profile solo moment would make Harry, then 12, feel overshadowed and excluded.

According to Andersen, Diana had confidenc