No More Sad Songs Little Mix Feat. Machine Gun Kelly
We take a look at ten of Katy's different styles from summer to sparkling to slightly geeky!
Katy Perry performing live
Katy Perry arrives at the 2010 American music awards
Katy Perry performs in Austria to mark the opening of ski winter season.
Katy Perry performs at the Postbahnhof arena in Berlin in a latex dress and her trademark candy ring.
Katy Perry in New York with a lollipop - proving she likes getting her lips round more than just cherry chapsticks.
Singer Katy Perry performs on NBC's "Today" in New York's Rockefeller Center Friday, Aug. 27, 2010.
Katy Perry onstage at Teen Choice 2010 held at the Gibson Amphitheatre on August 8, 2010. Pic: PA Photos