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The Best Pop Star Transformations
7. Katy Perry
Katy Perry started out her music career with a seemingly grunge-inspired look along the lines of stars like Alanis Morissette, but re-emerged with her debut album 'One Of The Boys' and a sexed up style complete with long brunette locks. Since then Katy's style has evolved from a 'Teenage Dream' candy-inspired look to something a little more demure and mature for new album 'Prism'.