When Katy Perry burst onto the scene in 2008 with her number-one single ‘I Kissed a Girl’, what most people probably couldn’t infer from the song and its raunchy music video is that growing up she had very little exposure to non-religious music. In fact, having been born to a couple of born-again Christians, she initially pursued a career in gospel music. But it soon became clear that this was not her calling–her first gospel album, the blandly titled Katy Hudson, only sold 200 copies. Undeterred, she reinvented herself as a colourful, wacky sex symbol, and soon became one of the world’s most famous pop stars. She was even married to controversial comedian Russell Brand for a few months. What must her parents think? Four studio albums later, Katy Perry is on the final leg of her Prismatic World Tour in Europe promoting her newest album, Prism.