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Katy Perry, Derek Hough at 'Los Angeles Haunted Hayride' event

<div class="meta "><span class="caption-text ">Katy Perry attends the 4th Annual Los Angeles Haunted Hayride VIP Premiere Night held at Griffith Park on Sunday, Oct. 7, 2012. (John Shearer&#47;Invision for LAHH&#47;AP Images)</span></div>
October 9, 2012 12:00:00 AM PDT