Celebs spill their biggest fears at L.A.'s Haunted Hayride

The hills were alive with the sound of shrieking Sunday night as celebs came out to test their fear factor at the Los Angeles Annual Haunted Hayride in Griffith Park. Though we couldn't film them getting spooked, they did fill us in what makes them scream.

"Paranormal activity," said Pretty Little Liars star Lucy Hale. "That stuff scares me!"

But Lucy is no coward. She says she faces her fears head on.

"I love it," she told SheKnows when we asked if she likes scary stuff. "I live for it."

Another big fan of the spooky holiday is former Girls Next Door star Bridget Marquardt. She told SheKnows that freaking her out is no easy task.

More: See Bridget model her sexy Halloween costume line and tour her home.

"It's really hard to scare me but when they do, I know they did a really good job," said Bridget. "The scariest thing is definitely clowns to me and aliens are a close second."

But the ladies weren't the only ones expressing their fears -- Good Morning America host Melissa Rycroft told us her hubby Tye Strickland is actually the scaredy cat in the family.

"I love getting scared and I'm a hard scare," she told SheKnows. "He's actually a bigger wuss than I am. I think I'm going to have to be the man of the relationship and protect him."

Read more: What they said about their Halloween costumes >>

Even hunky men like Sex and the City star Gilles Marini admit to catching the creeps at times.

"I'm very scared of heights," Gilles revealed. "I was a fire fighter and I had no fear of heights before, but I kind of developed this fear of heights."

Other celebs at the opening included Nikki Reed and finance Paul McDonald, The Biggest Losers' Jillian Michaels and Bob Harper, Lauren Conrad, Jamie-Lynn Sigler, Greer Grammer, and Krysten Ritter.

Fashion Credit: Whitney's top by Wkshp.

Photo credit: WENN