Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012

Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
Katy Perry performs at BBC Radio One Live Lounge Special in London on March 19, 2012
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Katy Perry