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

Slideshow posted in Photos | Tuesday, October 09, 2012

18 of 28: Katy Perry attends the 4th Annual Los Angeles Haunted Hayride VIP Premiere Night held at Griffith Park on Sunday, Oct. 7, 2012. ( Photo / John Shearer/Invision for LAHH/AP Images)