Princess Diana's daredevil wedding guest outfit for brother Charles Spencer's whirlwind nuptials

Princess Diana may have been trying to keep the limelight on her brother Charles, 9th Earl Spencer on his wedding day, but the fashion icon couldn't help but spark a flurry of excitement over her outfit.

The late Princess of Wales was pictured at her former childhood home Althorp House for Charles and his first wife Victoria Aitken's whirlwind wedding in September 1989.

Shielding from the wet UK weather under an umbrella, Diana didn't let the rain dampen her spirits as she stepped out in a bridal white fitted column dress that fell to her knees. A grey jacket with a buttoned waist and silver lining added a layer of warmth, while ivory heels, a grey and white hat and a classic pearl necklace perfectly coordinated with Diana's outfit.

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Her young son Prince William looked cute in a smart blue jacket and yellow tie, while his brother Prince Harry was dressed in a cream frilly shirt and a red sash as he carried out his page boy duties.

Charles Spencer's wedding

Charles and Victoria had only been dating for six weeks when he proposed with a very unusual engagement ring.

A diamond and a ruby were shaped into two halves of a heart topped with a crown with mini diamonds around the outside. It looked almost identical to one formerly owned by Queen Elizabeth II's great-great-grandmother, Queen Victoria.

Model Victoria showed off her new rock as she posed for engagement photos at Althorp in July 1989, just two months before they tied the knot.

The bride wore a vintage champagne-coloured patterned wedding dress from Tomasz Starzewski with long sleeves, button detail down the front and a fur trim. Perhaps the unusual off-white hue of Victoria's dress was the reason Diana wore white – a colour normally off-limits for guests to prevent upstaging the bride.

Victoria accessorised with a flowing veil and the Spencer tiara – the same one Diana had worn at her wedding to King Charles in 1981.

Diana's brother and his first wife welcomed children Kitty, Eliza, Amelia and Louis before splitting in 1997.

Charles went on to walk down the aisle another two times. He was married to Caroline Freud from 2001 to 2007, during which time he fathered children Edmund and Lara, and then to Karen Gorden from 2011 to 2024, with whom he shares a daughter called Charlotte.

The Earl announced his split from the latter in June, telling the Mail On Sunday: "It is immensely sad. I just want to devote myself to all my children, and to my grandchildren, and I wish Karen every happiness in the future."

Princess Diana's fashion influence

Despite being one of the most influential women in the world, Diana told ITN: "Fashion isn't my 'big thing' at all. Obviously if I'm helping the fashion industry and the British side of things, well that's marvellous. But I never try to do that".

Like her two daughters-in-law the Princess of Wales and the Duchess of Sussex, Diana often caused a mass sell-out of her clothing following royal outings.

The People's Princess was never afraid to be experimental or rebellious with her style. Case in point, her Roland Klein striped navy and white skirt suit at Sarah Brennan and Hugh Lyndsay's wedding.

She also chose another head-turning teal colour for her brother-in-law Prince Andrew's royal wedding with Sarah Ferguson. Diana stepped out in a blue satin gown with long sleeves and a black belt that matched the polka dot print.

DISCOVER:Princess Diana's wedding dress designer reveals 'very sexy' pre-wedding dress – exclusive photo