Biography
Triona Lillis is an Irish costume designer. She began her career as an apprentice to her sister, fashion designer Carol Lillis, and studied archaeology at the National University of Ireland Galway. She worked in theatre with DramaSoc at NUIG and as costume designer for Macnas Theatre Company in Galway before entering film.
Her film credits include Wild Mountain Thyme (2020), Boys from County Hell (2021), Flora and Son (2023) and Power Ballad (2026). She has also designed costumes for television series including Dominion Creek (2015), Smother (2021–2022), Blackshore (2024) and These Sacred Vows (2026).
Lillis runs the slow-fashion brand The Tweed Project and has received four IFTA nominations for her work.
