Marie Claire Marie Claire
  • Celebrity
  • Fashion
  • Beauty
  • Culture
  • Power
  • Nice Talk
  • Fashion Month
  • More
    • Politics
    • Career & Money
    • Health & Fitness
    • Power Play
    • Travel
    • Promo Codes
    • Food & Cocktails
    • About Us
    • Subscribe
    • Sex & Love
  • Newsletter SIGN UP TO OUR NEWSLETTER
  • Marie Claire
    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!


    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

    You are now subscribed

    Your newsletter sign-up was successful


    Want to add more newsletters?

    Marie Claire Daily

    Delivered daily

    Marie Claire Daily

    Get exclusive access to fashion and beauty trends, hot-off-the-press celebrity news, and more.

    Marie Claire Self Checkout

    Sent weekly on Saturday

    Marie Claire Self Checkout

    Exclusive access to expert shopping and styling advice from Nikki Ogunnaike, Marie Claire's editor-in-chief.

    Maire Claire Face Forward

    Once a week

    Maire Claire Face Forward

    Insider tips and recommendations for skin, hair, makeup, nails and more from Hannah Baxter, Marie Claire's beauty director.

    Livingetc

    Once a week

    Livingetc

    Your shortcut to the now and the next in contemporary home decoration, from designing a fashion-forward kitchen to decoding color schemes, and the latest interiors trends.

    Homes & Gardens

    Delivered Daily

    Homes & Gardens

    The ultimate interior design resource from the world's leading experts - discover inspiring decorating ideas, color scheming know-how, garden inspiration and shopping expertise.


    An account already exists for this email address, please log in.
    Trending
    • NYFW
    • Life In Plastic
    • Banana Republic x La Ligne
    • New Books
    • The Venice Film Festival
    1. Celebrity
    2. Royals

    There's a Long-Standing Debate over Princess Kate's Title—a Royal Correspondent Just Cleared It Up

    The great Kate debate.

    Christine Ross's avatar
    By Christine Ross
    Published 28 July 2026 In News

    When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

    Princess Kate Middleton royal title
    (Image credit: Getty Images)
    • Facebook
    • X
    • Pinterest
    Share this article
    Join the conversation
    Follow us
    Add us as a preferred source on Google
    Subscribe to our newsletter

    A royal correspondent has finally settled a debate that’s been ongoing for over fifteen years. Every social media post and headline news story referring to the Princess of Wales as “Kate Middleton” is fraught with replies correcting Princess Kate’s official title: is it Kate, Catherine, or something else entirely?

    Kate Middleton and Prince William announce their engagement in the State Rooms of St James's Palace on November 16, 2010

    Prince William referred to his then-fiancée as "Kate" in their engagement interview.

    (Image credit: BEN STANSALL/AFP via Getty Images)

    Prince William and Princess Kate during the coronation

    She is now formally known as Catherine, the Princess of Wales.

    (Image credit: Getty Images)

    Channel 5’s royal correspondent Simon Vigar told GB News that palace officials have advised member of the press to refer to the Princess of Wales by her formal birth name, Catherine. Vigar explains that "Kate obviously works in a headline, like Di and Meg.” She has become known as Princess Kate—or, occasionally, even as Kate Middleton—but Vigar reports that in recent years “we were getting briefed that it's 'Catherine'.”

    The great debate over Kate vs. Catherine has been going on for over fifteen years, since Prince William referred to her as “Kate” in their official engagement interview. Since then, the royal couple’s team and the Princess of Wales herself have tried to correct the narrative and shift the name to “Catherine.” On a 2021 royal engagement, Catherine told a young child, "I'm the Duchess of Cambridge, but lots of people call me Catherine." Most recently, the Princess of Wales told children in Italy that her name is “Caterina,” the italian form of Catherine.

    Latest Videos FromMarie Claire
    Watch full video here:

    Prince William and Kate Middleton wedding

    Princess Kate stopped being "Kate Middleton" on her wedding day in 2011.

    (Image credit: Getty Images)

    The Four Wives of Windsor: the Inside Story of Diana, Camilla, Catherine and Meghan – the True Power Behind the Royal Family

    Simon Vigar
    The Four Wives of Windsor: the Inside Story of Diana, Camilla, Catherine and Meghan – the True Power Behind the Royal Family
    $15
    SHOP NOW

    Kate Middleton wearing a red coat and pointing, sitting next to her parents and friends at William's graduation

    Her family has reportedly always called her "Catherine."

    (Image credit: Getty Images)

    Simon Vigor, who has written the upcoming biography The Four Wives of Windsor: The Inside Story of the Power Behind the Crown, reports that she is "definitely Catherine,” adding that her family have “always” called her Catherine. The princess’s family, including her mother Carole Middleton and brother James Middleton, have referred to her as "Catherine" throughout interviews and stories of their childhood.

    So, why can’t she escape her maiden name? An SEO expert explained to Hello that it all comes down to SEO: search engine optimization. "Search behavior is kind of like how people are searching and the underlying intention behind those searches," according to Andrew Coco, senior director of web strategy and SEO at NBCUniversal. Coco explains that "Kate Middleton" sees more searches in search engines over her formal title or her full name, according to Google Trends.

    You may like
    • Kate Middleton wears a giant straw hat and a green dress to attend Wimbledon in July 2026 Princess Kate "Melds More Easily" to Royal Life
    • Princess Kate Middleton has long brown wavy hair with blonde highlights and looks to the sky while wearing a dark green coat "The Burdens" Princess Kate Experiences as a Royal Woman
    • Kate Middleton wears a dark red coat and matching hat while Meghan Markle wears a navy coat and matching hat One Royal "Brought Star Power" to the Royal Family
    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!

    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.
    Christine Ross
    Christine Ross
    Social Links Navigation
    Writer

    Christine Ross is a freelancer writer, royal expert, broadcaster and podcaster. She's worked with news outlets including the BBC, Glamour, Talk TV, ET, PBS, CNN and 20/20 to cover the foremost royal events of the last decade, from Prince George’s birth to the coronation of King Charles III.

    She previously served as co-host of Royally Us, a weekly royal podcast by Us Weekly. As a freelance writer and royal commentator she provides expert commentary, historical context and fashion analysis about royal families worldwide, with an emphasis on the British Royal Family.

    Read more
    Princess Kate Middleton has long wavy brown hair and wears a black polo neck sweater with a brown blazer
    Royals One Royal Has Become "Very Close" to Princess Kate
    By Amy Mackelden
    Pippa Middleton wearing a white dress and sunglasses at Wimbledon
    Royals Pippa Middleton Could Be Offered One Future Role With Princess Kate
    By Kristin Contino
     
     
    A large group of members of the Royal Family on the Buckingham Palace balcony at Trooping the Colour 2019
    Royals This Royal's Image Rehabilitation Has Become "One of the Greatest PR Campaigns"
    By Kristin Contino
    Princess Kate Middleton wears a green dress and has long wavy brown hair and Duchess Meghan Markle wears a white shirt and wears her hair in a ponytail
    Royals Negative Royal Stories Reduce All Women to "Witches"
    By Amy Mackelden
     
     
    Latest in Royals
    Prince William, Kate Middleton, Meghan Markle, Prince Harry
    Royals Prince William and Princess Kate Are Taking A “Wait-and-See Approach” To Meghan Markle and Prince Harry’s UK Move
    Prince William Princess Kate dating
    Royals Royal Editor Reveals the “Sincere” Advice Given To Kate Middleton While Dating Prince William
     
     
    Princess Diana revenge dress
    Royals Princess Diana’s “Extraordinary” Revenge Dress Goes To Auction With a Six-Figure Price Tag
    Princess Kate mental health earrings
    Royals Princess Kate Makes “Significant” Jewelry Choice on Surprise Outing
     
     
    Latest in News
    A model on the DVF Spring 2027 runway at New York Fashion Week.
    Fashion Henry Zankov Puts the DVF Woman Back in "Motion"
    collage of the best celebrity looks at the Spring/Summer 2027 season of New York Fashion Week
    Celebrity Style New York Fashion Week Is Back—and So Are the Cool-Girl Celebrity Outfits
     
     
    Prince William, Kate Middleton, Meghan Markle, Prince Harry
    Royals Prince William and Princess Kate Are Taking A “Wait-and-See Approach” To Meghan Markle and Prince Harry’s UK Move
    Anne Hathaway brought a little purple purse from Bulgari to a New York Fashion Week event
    Celebrity Style Anne Hathaway Just Started NYFW With a Tiny On-Trend Purple Purse
     
     
     
     
     
     
     
     
    Marie Claire
    RSS
    • About us
    • Contact Future's experts
    • Contact us
    • Advertise Online
    • Newsletter
    • Terms and conditions
    • Privacy policy
    • Cookies policy
    • Careers
    Add as a preferred source on Google Add as a preferred source on Google

    Marie Claire is part of Future US Inc, an international media group and leading digital publisher. Visit our corporate site.

    © Future US, Inc. Full 7th Floor, 130 West 42nd Street, New York, NY 10036.