The Prince of Wales gave the late Princess Diana a "very nice" signet ring the night before their wedding day.

The late Princess Diana on her wedding

The late Princess Diana on her wedding

The 68-year-old royal married his first wife in 1981 and just a few hours prior to the marital ceremony, which took place at St. Paul's Cathedral, London, Prince Charles sent the golden-haired beauty a piece of jewellery with a heartfelt note.

Speaking about the moments leading up to her big day in recordings made with author Andrew Morton, who penned 'Diana: Her True Story', which have recently been released and obtained by the Mail Online, Diana - who tragically died in a car accident in 1997 aged 36 - said: "He sent me a very nice signet ring the night before to Clarence House, with the Prince of Wales feathers on and a very nice card that said: 'I'm so proud of you and when you come up, I'll be there at the altar for you tomorrow. Just look 'em in the eye and knock 'em dead.'"

And Diana - who has sons Prince William, 34, and Prince Harry, 32, with Charles - was "desperately trying" to act like a "mature" adult prior to the marital ceremony, although she found it hard.

She said: "We got married on Wednesday. On the Monday, we had gone to St Paul's for our last rehearsal, and that's when the camera lights were on full and I got a sense of what the day was going to be.

"I was desperately trying to be mature about the situation, but I didn't have the foundations to do it, and I couldn't talk to anyone about it."

And while Diana was feeling uneasy, both her and Charles were left feeling "tired" on their big day.

Diana - who split from her partner in 1997, one year prior to her death - said: "I remember my husband being very tired -- both of us were quite tired. Big day."

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