Who designed the jacket worn by Julie walters in the movie mamma mia?

The jacket worn by Julie Walters in the movie "Mamma Mia!" was designed by costume designer Ann Roth. Roth is known for her work in film and theater, and her costumes in "Mamma Mia!" helped capture the vibrant and whimsical spirit of the story. The film features a mix of colorful and stylish outfits that reflect the lively atmosphere of the musical.