PAUL COSTELLOE AUTUMN/WINTER 2026

William Costelloe presents his first collection as Creative Director for Paul Costelloe – a powerful statement rooted in tailoring and structure. William explores modern tailoring through bold proportions and precise construction. Strong, structured shoulders and sculpted silhouettes define the collection with meticulous cuts and layered, luxurious looks that showcase the DNA of the Paul Costelloe brand. The show opens with tailoring crafted from 100% Irish wools and tweeds by Magee Fabrics. Hand-crafted sculpted florals, formed from the same fabrics, signal a fresh but familiar beginning for the house. A refined dialogue between tailored and fluid fabrics runs throughout: structured coats and corsetry are paired with silk and organza blouses, oversized collars sweep over the head, and wide pleated trousers introduce movement and ease. Tonal dressing presented in blouses, ties and colour-on-colour styling, enhances the sculptural tailoring. Knitwear plays a key role, with full cashmere rib and cable looks, large collars and sculpted shoulders creating strong yet elegant silhouettes. William's colour palette remains concise and assured, moving from earth-toned tweeds, creams, chocolate and tan browns into a striking finale of black and charcoal. The closing looks introduce a new dimension of the brand, with subtle sequined suits and tuxedos featuring diamante button details, alongside fluid black and silver jacquard dresses The in-house print, designed by Paul and William Cost