Preen by Thornton Bregazzi F/W 15 is a runway show that took place on February 22, 2015, during London Fashion Week F/W 15 Women's. The show was designed by Justin Thornton and Thea Bregazzi, with casting directed by Angus Munro and Noah Shelley. It featured a cast of 34 models, opening with Molly Bair and closing with Alexandra Elizabeth Ljadov. This collection is associated with the brand Preen by Thornton Bregazzi.