The Devil Wears Prada 2 fashion secrets revealed The costume designer behind stylish new movie The Devil Wears Prada 2 - starring Anne Hathway, Meryl Streep and Emily Blunt - has lifted the lid on the fashion secrets behind the huge new release. 1 May 2026 The costume designer behind The Devil Wears Prada 2 has lifted the lid on the fashion in the stylish new movie.