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Katy Perry makes an appearance at the Americana mall in Glendale, CA
![Katy Perry makes an appearance at the Americana mall in Glendale, CA](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-6.jpg?w=680)
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Singer Katy Perry arriving at BBC Live Lounge Studios in London, UK
![Singer Katy Perry arriving at BBC Live Lounge Studios in London, UK](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-2.jpg?w=680)
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Katy Perry At The Miu Miu Fashion Show In Paris
![Katy Perry At The Miu Miu Fashion Show In Paris](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-10.jpg?w=680)
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Celebs Attend The Viktor And Rolf A/W Fashion Show
![Celebs Attend The Viktor And Rolf A/W Fashion Show](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-9.jpg?w=680)
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Katy Perry Out And About In Paris With Sheer Rear
![Katy Perry Out And About In Paris With Sheer Rear](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-7.jpg?w=680)
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Katy Perry performing her ‘Californian Dreams Tour’ At The Hammersmith Apollo In London
![Katy Perry performing her ‘Californian Dreams Tour’ At The Hammersmith Apollo In London](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-13.jpg?w=680)
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Katy Perry at Montana club in Paris_
![Katy Perry at Montana club in Paris_](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-14.jpg?w=680)
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Singer Katy Perry at the Nobu restaurant in Mayfair, London
![Singer Katy Perry at the Nobu restaurant in Mayfair, London](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-12.jpg?w=680)
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Katy Perry goes shopping at Dover Street Market before taking the Eurostar
![Katy Perry goes shopping at Dover Street Market before taking the Eurostar](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-11.jpg?w=680)
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Katy Perry Arrives At Paris Fashion Week Chanel Show
![Katy Perry Arrives At Paris Fashion Week Chanel Show](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-8.jpg?w=680)
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Downcast Katy Perry Visits French Restaurant
![Downcast Katy Perry Visits French Restaurant](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-5.jpg?w=680)
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Katy Perry Rocks Out Orlando With Her California Dreams Tour
![Katy Perry Rocks Out Orlando With Her California Dreams Tour](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-4.jpg?w=680)
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Katy Perry And Baptiste Giabiconi Arrive In Paris
![Katy Perry And Baptiste Giabiconi Arrive In Paris](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-3.jpg?w=680)
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Katy Perry in paris
![Katy Perry in paris](http://hollywoodlife.com/wp-content/uploads/2012/03/katy-perry-blue-hair-1.jpg?w=680)