It's a scary time of year to be in Hollywood!

Tons of celebs stepped out for Universal Studios Hollywood's Halloween Horror Nights over the weekend. Demi Lovato brought a bunch of pals with her, including BFF Hanna Beth, as did Dancing with the Star castmates David Arquette, Ricki Lake, Kym Johnson, Chaz Bono and Cheryl Burke.

Demi had such a great time at the amusement park that she even Tweeted about it, writing, "Just thinking about how excited I am for Halloween! Went to @HorrorNights @UniStudios this weekend and it was sooooo scary - loved it!!"

Wilmer Valderama, Elijah Wood and former One Tree Hill star Chad Michael Murray also hung out with some ghastly creatures.

But David with his old co-star, Scream's Ghostface Killer? Hands down the funniest duo of the day. Sorry, Ricki!

The event runs at Universal Studios through October 31.

Ed Graff

Nothing sexier than seeing former Playboy playmate-turned-actress Jenny McCarthy hanging out with Dancing With the Stars pro Cheryl Burke in Vegas. Talk about hitting the jackpot!

Jenny and Cheryl enjoyed a night in Sin City inside the Fantasy Tower at the Palms Casino Resort ... dining at Nove Italiano. We're told Ms. McCarthy grubbed on Lobster tails. That's our kinda woman.

See the two lovely ladies posing with Chef Geno Bernardo ... after the jump.

During last night's Dancing With the Stars live performance show, professional dancer Cheryl Burke injured herself while performing the paso doble.

Burke, 26, recalls the injury telling People:

"I felt something rip. There was a move where I get down quickly. It bothered me [in rehearsals], but not like this. Now that the adrenaline of the live show is wearing off I'm feeling the pain a bit more."

Despite the injury, Burke and partner Chris Jericho earned a score of 23 points.

Burke adds, "I'm getting old." Hmm ... at 26? The two will find out tonight if they're going home. We'll be watching!

This isn't the first injury on this season's DWTS. Read about the injury involving Maks ... after the jump.

Two-time Dancing With The Stars champ Cheryl Burke is best known for her amazing dance moves on the hit show, but the beauty has decided to come forward to get something off her chest: she was molested as a child.

In her new book Dancing Lessons Burke reveals she was repeatedly molested by a friend of her family's; a retired mailman who was trusted and well liked in Burke’s Bay Area community. Apparently the man would occasionally pick up young Burke from school and do odd jobs around her home. The assaults began when she was just 5.

The dancing queen explains:

"I'm telling my story. They're not secrets. There's no shame. I felt guilty for wanting his love and affection. Testifying against him was ... the hardest thing I've ever done ... I saw his face and lawyers were asking me these questions and I was like, 'What am I doing? Did he even do anything wrong?"

Burke actually testified against the former mailman in court, helping send him to prison for nearly 20 years, after he was accused of targeting other children.

So why is Burke revealing this horrible moment in her young life now? The gorgeous dancer explains: "If I can help just one person, for me that's all that matters."

Work hard, play hard! Erin Andrews, Julianne Hough and Cheryl Burke all arrived at Philippe Chow in WeHo last night with the rest of the Dancing With the Stars cast to celebrate Cheryl's 26th b-day. Congrats! Didn't realize she was so young.

Sidebar, will Niecy be going home tonight? Loves her, but I think it's her time to leave!

After the first-ever double scoring night on DWTS, the stars and pros headed to The Mint for An Evening With Mark Ballas.

Cheryl Burke didn't waste an opportunity to show off the $10,000 ring given to her by partner Chad Ochocinco, whose sexy Rumba got them back into the good graces of the judges. Hey, for a gift like that, she better have made sure he scored!

As always, The Bachelor Jake Pavelka, whose Tango was a little less interesting, showed off a jewel of his own -- fiancee Vienna. These two haven't met a photo op where they didn't like to kiss!

And despite the fact that Mark Ballas was the first one out this season, the bromance between him and fellow pro/bff Derek Hough seems to be still going strong.

Also on hand for the night of music with one of DWTS' pros who is debuting a new EP, Waiting for Patience, were Nicole Scherzinger, Evan Lysacek, Aiden Turner, Chelsie Hightower, Adam Shankman and the Pussycat Dolls' Robin Antin.

Cheryl Burke already admitted her affection for Chad Ochocinco on the show last night (and it's obvious in X17online's pix) but she AND DWTS other rumored new couple, Erin & Maks, played it coy at Industry last night by showing up with other dancers!

Cheryl rode to the club with Anna Trebunskaya's partner Evan Lysacek while Erin Andrews showed up to the club with her girls; Maksim Chmerkovskiy came with the boys!

But really, are they fooling anyone?

Last night on episode two of Dancing With the Stars, Cheryl Burke and Chad Ochocinco revealed that they have as much chemistry offstage as they do onstage!

X17online snapped a pic of the couple, who looked close enough to kiss, as they prepared to perform their Fox Trot.

I've never seen the usually stern Cheryl so giggly as she was when Chad jokingly got down on one knee.

Cheryl even revealed that their flirtation "may go somewhere!"

IMO, Chad's the hottest guy on the show, so even though the judges were cold on his performance, lets hope his chemistry with Cheryl is enough to get him through the vote tonight!