Trelise Cooper is one of New Zealand's high profile fashion designers, her work appearing on the cover of Women's Wear Daily in August 2004. Her designs grace many of her country's celebrities and are exported to Australia and the United States.

Cooper's catwalk shows at New Zealand Fashion Week are often marked by the use of celebrities, including Charlotte Dawson and the twins, Caroline and Georgina Evers-Swindell.

She is married to textile company boss Jack Cooper.