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Paul Costelloe, Princess Diana's personal designer, dies at 80
Paul Costelloe has passed away at 80

Paul Costelloe, Princess Diana's personal designer, dies at 80

Nov 23, 2025
09:45 am

What's the story

Irish fashion designer Paul Costelloe, known for his long-standing association with the late Princess Diana and a nearly four-decade presence at London Fashion Week, has passed away at 80. The news was confirmed by his family in a statement to local media on Saturday. Costelloe died peacefully in London after a brief illness, surrounded by his wife and seven children.

Career beginnings

Costelloe's early life and career in fashion

Born in Dublin in 1945, Costelloe started his formal training in fashion before moving to Paris to study at the prestigious Chambre Syndicale de la Haute Couture. His career later took him to Milan, where he worked with luxury retailer La Rinascente. He then moved to New York City, where he launched his first label. Eventually, he settled in London, which became central to both his brand and reputation.

Royal connection

Costelloe's association with Princess Diana and London Fashion Week

In 1983, soon after founding Paul Costelloe Collections, he was appointed Princess Diana's personal designer, and once described her as "genteel, feminine, warm, and humorous." Their collaboration lasted from the early years of her public life until her death in 1997. During this time, Costelloe created many of her iconic looks. He was also a regular participant at London Fashion Week since its inaugural edition in 1984 and last appeared at the event in September to unveil his spring-summer line.

Brand expansion

Costelloe's brand and legacy in fashion

Over the years, Costelloe's brand expanded to include womenswear, menswear, accessories, homeware and jewelry. Ireland's Deputy Prime Minister Simon Harris paid tribute to the late designer, saying he "led a remarkable life as a leading figure in Irish, UK and international fashion and business for decades." He added that Costelloe built a hugely successful business through "incredible talent, discipline, and an unwavering commitment to quality." May his soul rest in peace.