Perry cozies up to her ex during a day at the beach in Miami. Plus: Gwen Stefani, Kate Hudson, Winona Ryder and more
Credit: Danny Martindale/WireImage
Published: Friday May 01, 2009 | 05:00 PM EDT
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Who's ready to get the party started? Pop star Pink gets the crowd pumped up during a performance Thursday in London's Trafalgar Square.
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