6) Katy Perry
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Hair Idols: The Top Ten Pop Ladies
5. 6) Katy Perry
Storming in at number six on our countdown is pop's very own 'Teenage Dream' Katy Perry! The US star's ever changing hair colour is a constant source of fan speculation, with many choosing to adopt their idol's various looks, and Katy has gone through every colour in the rainbow throughout her career so far. The 'Wide Awake' singer's fans can't seem to get enough of finding out what Katy will do to her hair do next!