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    1. Celebrity
    2. Royals

    A Guest Wore Princess Kate's Polo Dress to Peter Phillips's Wedding—And She's Married to Kate's Ex

    Lady Natasha Rufus Isaacs, founder of Beulah London, wore a familiar dress from her label on June 6.

    Kristin Contino#039;s avatar
    By Kristin Contino
    Published 8 June 2026 In News

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    A split image of Princess Kate and Natasha Rufus Isaacs wearing the same blue dress
    (Image credit: Getty Images)
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    When Peter Phillips married Harriet Sperling on June 6, the congregation at All Saints ​Church in the village of Kemble was filled with members of the Royal Family, but one guest had a close tie to the future Queen. Princess Kate’s ex-boyfriend, Rupert Finch, attended the ceremony alongside his fashion designer wife, Lady Natasha Rufus Isaacs—and she wore a very familiar dress from her brand for the occasion.

    The Princess of Wales briefly dated Finch in college before she got together with Prince William, and the attorney was a guest at William and Kate’s 2011 wedding. He married Isaacs in 2013, and as the founder of royal-favorite brand Beulah London, she’s maintained a connection to the Princess of Wales. In fact, Lady Natasha—who is the daughter of Simon Rufus Isaacs, 4th Marquess of Reading—wore the same blue dress from her label that Kate wore to a 2023 polo match.

    The three-quarter sleeve, silk crepe de chine midi dress retailed for £550 at the time and features balloon sleeves and a white pattern. Isaacs paired it with a bow-trimmed white headpiece and an embroidered Aspinal of London Midi Mayfair bag, another favorite of the Princess of Wales.

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    Lady Natasha Rufus Isaacs and Rupert Finch walking into Peter and Harriet#039;s wedding

    Lady Natasha Rufus Isaacs and Rupert Finch attend the wedding of Harriet Sperling and Peter Phillips on June 6.

    (Image credit: Getty Images)

    Princess Kate hugging Prince William on a polo field

    Kate congratulates Prince William at a 2023 polo matching while wearing the same Beulah dress.

    (Image credit: Getty Images)

    Kate has worn Beulah designs frequently over the years, and Sperling is also a fan of the label, which has been worn by everyone from Princess Beatrice to Queen Mary of Denmark. Although Kate didn't wear Beulah to the royal wedding, she looked elegant in a beige Roland Mouret dress with a Jane Taylor boater hat, keeping the focus on the newest royal bride.

    Isaacs spoke fondly of the Princess of Wales in a 2020 interview with Hello! magazine. “It’s always lovely to see the Duchess in Beulah,” she said. “She’s a wonderful ambassador for British brands and that is more important than ever at the moment.”

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    Finch has never commented on his relationship with Kate, except for stating (via the Sun), “It’s not something I’ll ever talk about. It’s between Kate and me and was a long time ago.”

    Princess Kate wearing a beige dress and hat walking next to Prince William at Peter Phillips and Harriet Sperling#039;s wedding

    The Prince and Princess of Wales arrive at the royal wedding on June 6.

    (Image credit: Getty Images)

    However, there’s no bad blood between the two, as former royal butler Grant Harrold shared. “Members of the Royal Family are known for remaining close with their exes,” Harrold said, speaking on behalf of Casino Hawks.

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    “The King and Prince William both still count some of their exes as good friends,” he added, explaining that “they tend to date within their friendship group” and that it wouldn't have been a surprise for the Princess of Wales to run into him at the wedding.

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    Kristin Contino
    Kristin Contino
    Senior Royal and Celebrity Editor

    Kristin Contino is Marie Claire's Senior Royal and Celebrity editor. She's been covering royalty since 2018—including major moments such as the Platinum Jubilee, Queen Elizabeth II’s death and King Charles III's coronation—and places a particular focus on the British Royal Family's style and what it means.

    Prior to working at Marie Claire, she wrote about celebrity and royal fashion at Page Six Style and covered royalty from around the world as chief reporter at Royal Central. Kristin has provided expert commentary for outlets including the BBC, Sky News, US Weekly, the Today Show and many others.

    Kristin is also the published author of two novels, “The Legacy of Us” and “A House Full of Windsor.” She's passionate about travel, history, horses, and learning everything she can about her favorite city in the world, London.

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