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William Costelloe is new creative chief of Paul Costelloe after father’s death


Published



January 15, 2026

William Costelloe as been appointed creative director of the Paul Costelloe brand following the death of his father in November.

William Costello with his father, Irish designer Paul
William Costello with his father, Irish designer Paul

“William will lead the development of all the brand’s collections moving forward, championing the values of creativity, quality and craftsmanship laid down by Paul over more than 40 years”, a statement from the house read.

William added: “My father taught me to see fashion through the eyes of an artist; to respect materials, the process, the people. I am honoured to be continuing his legacy, and I approach this role with determination, gratitude and excitement for what lies ahead for the Paul Costelloe brand.”

He was design director to Paul Costelloe for the past seven years, during which time father and son worked hand in hand to develop the seasonal catwalk collections. Alongside Paul, he has also led the design and development of the collections with its retail and license partners globally, including ready-to-wear womenswear and menswear, homewares, bridal, children’s occasionwear, bags and accessories.

Known for his expertise in colour and material, William previously worked as a print and textile designer for Portuguese bedding manufacturer Piubelle and homewares producer Matceramica. He was also a visual merchandiser and stylist for department store La Rinascente in Milan, the same department store Paul worked at early in his career.

The Paul Costelloe AW26 collection, which will officially open London Fashion Week on the 19 February, marks the first collection under William’s leadership as creative director.

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