The European premiere of ‘Wicked’ has turned London’s South Bank into the Emerald City, with stars Ariana Grande, Cynthia Erivo, and Jeff Goldblum participating despite rainy weather. The film, an adaptation of the famous stage musical, explores the backstory of the Wicked Witch of the West from ‘The Wizard of Oz.’ Similar to last year’s Barbie press tour, the cast embraced a method dressing approach, showcasing their characters’ signature colors.