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

Slideshow posted in Photos | Tuesday, October 09, 2012

16 of 28: Christa B. Allen of 'Revenge' 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)