She is one of the world's most acclaimed performers " going stratospheric as Elphaba in the hit film adaptation of Wicked. Now she's up for a best actress Oscar. What next for Britain's brightest star? I thought I knew everything about Wicked when Cynthia Erivo walked into a meeting room in the Guardian's London offices. She felt wildly incongruous, way too perfect and vivid for the neutral surrounds, like seeing a p…
