Want to know more about your favourite pop and film stars? Read on! Want to Know Your Idol? is a fascinating, in-depth pop and film biography series that is packed to the brim with the latest facts on the stars and tells the story of their life, from childhood and through their ascent to fame, and reports on what their lives are like today as some of the world's biggest idols. Find out all about Katy Perry's early life in Santa Barbara, California and how her background propelled her to fame and fortune. Discover her pre-performance routines, her favourite fashion styles and answer lots of pop quiz questions to find out if you are a Katy Perry super-fan!