The Mystery Behind Princess Kate’s State Banquet Ballgown

The designer believed in “beautifully made pieces to be treasured and passed down to the next generation, much like jewelry.”

Princess Wales wears an Andrew Gn gown.
(Image credit: Getty Images)

For the glittering State Banquet honoring the President and First Lady of Nigeria, Princess Kate arrived at Windsor Castle in a flowing green ballgown. The conservative neckline and long sleeves paid respect to the modest culture in Nigeria, while the deep green color was an homage to Nigeria’s flag and national colors of green and white, showing off Princess Kate’s expert sartorial diplomacy skills.

WINDSOR, ENGLAND - MARCH 18: Edward, Duke of Edinburgh and Catherine, Princess of Wales arrive to attend a State Banquet in St George's Hall on day one of their state visit to the UK at Windsor Castle on March 18, 2026 in Berkshire, England. (Photo by Aron Chown - WPA Pool/Getty Images)

Princess Kate wore a green gown from Andrew Gn.

(Image credit: Getty Images)

Princess Kate and Prince William walking with Prince Edward at a state banquet at Windsor Castle

The Princess of Wales chose Queen Mary's Lovers Knot tiara for the occasion.

(Image credit: Getty Images)

Surprisingly, Princess Kate did not look to a Nigerian designer for this important fashion moment. Instead, the Princess of Wales wore a bespoke ballgown from Andrew Gn, a now-retired Singaporean designer that she has worked with in the past. The designer stopped producing clothing in 2023, three years before the princess wore this design. While the color and conservative style makes it a perfect choice for this State Banquet, where—and when—did the gown come from?

Andrew Gn confirmed to MiddletonMaven on Instagram that he created the gown for the Princess of Wales in 2022, before his retirement in 2023. When asked about the long span of time between producing the garment and the princess wearing it, he described his belief in “heritage design,” noting that his styles were “beautifully made pieces to be treasured and passed down to the next generation, much like jewelry.” Rather than creating a one-time, flash-in-the-pan style, this classically designed ballgown will work time and again.

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WINDSOR, ENGLAND - MARCH 18: Sir Timothy Lawrence, Catherine Princess of Wales Prince William, Prince of Wales and Princess Anne, Princess Royal arrive to attend a State Banquet in St George's Hall on day one of their state visit to the UK at Windsor Castle on March 18, 2026 in Berkshire, England. (Photo by Henry Nicholls - WPA Pool/Getty Images)

Royal guests arrive at the State Banquet.

(Image credit: Getty Images)

LONDON, ENGLAND - JUNE 17: Queen Camilla, Catherine, Princess of Wales and the Duke of Kent during Trooping the Colour on June 17, 2023 in London, England. Trooping the Colour is a traditional parade held to mark the British Sovereign's official birthday. It will be the first Trooping the Colour held for King Charles III since he ascended to the throne. (Photo by Antony Jones/Getty Images)

Princess Kate wore Andrew Gn for Trooping the Colour 2023.

(Image credit: Getty Images)

The Princess of Wales wore a design from Andrew Gn once before, when she commissioned a bejewelled coat for Trooping the Colour in 2023. It is likely that both items were commissioned at the same time, shortly before the designer’s retirement. Again, a Singaporean designer seems an interesting choice for a very British occasion, until you look back on the Court Circular for that year: in 2023, Prince William hosted the Earthshot Awards in Singapore.

It is possible—in fact, very likely—that the Princess of Wales initially intended to join him for a longer visit to Singapore, and this bespoke green ballgown would have been perfect for the awards ceremony. Unfortunately, Prince George’s exam schedule kept the princess at home.

Luckily, Princess Kate’s penchant for recycling clothing and designer Andrew Gn’s “heritage design” ethos meant that this gown could be tucked in the wardrobe until the perfect occasion presented itself. Paired with Queen Mary’s Lover’s Knot tiara and the Queen Mother’s earrings, this gown had its moment to shine for the Nigerian State Banquet.

Christine Ross
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.