Ella Hooper: ‘Most embarrassing celebrity encounter? I said the classic thing you don’t ever say to Billy Bragg’

<p>The Australian singer-songwriter on misheard Killing Heidi lyrics, going solo after a chat with Stevie Nicks, and being a shit secret keeper</p><p><strong>What has been your most memorable interaction with a fan?</strong></p><p>When Killing Heidi first st