Katy Perry has transformed herself from cheeky girl-next-door to one of the world’s biggest pop stars in a matter of a few years.

As a newcomer, the I Kissed A Girl singer immediately won fans with her ceaselessly energetic live show. Since then, Katy has steadily built audiences across the planet by touching down in more than two dozen countries and filling increasingly larger venues each time she returned to a city.

In 2010 she released her sophomore album Teenage Dream, which has spawned huge chart hits including California Gurls, E.T. and the massive dancefloor track Firework.

As much as her life seems to play itself out in the press - she’s appeared on the cover of more than 15 magazines – she reminds us the real Katy is in every note and every word of her music.

“If you ever want an answer about how I felt about something or what I was going through or what I believe or my convictions or my love,” she says, “You just have to listen to the lyrics.”