Big trouble on the set of VH1's "Love & Hip Hop" ... TMZ has learned, the stars of the show are refusing to go to work ... and it's all because they think they're getting shafted in contract negotiations.

Sources close to the show tell us, all cast members were supposed to be present Tuesday in NYC to film a trailer for the upcoming season, but only half of the cast showed up. The other half stayed home in protest because negotiations for their new contracts had gone sour.

We're told the half that did show up then got upset ... believing they too were entitled to revised contracts ... and stormed off.

We're told most of the cast members want more money -- as much as double their last contract -- but there are other problems too ... some are pissed at how they were portrayed last season and they want more say in what footage gets aired.

We're told emergency meetings have since been called with the angry cast members ... and they're hoping to get what they want by the end of the week.

If they don't ... we're told the cast members plan to stick to their guns and continue their strike for as long as necessary. We reached out to VH1 for comment -- so far, no word back.

"America's Got Talent" star Zac Gordon ... aka Horse ... aka the guy with iron testicles ... is lucky to be alive ... after smashing his car into a tree while trying to avoid striking a deer, TMZ has learned.

Horse -- who became famous for allowing people to bash him in the scrotal-region on AGT -- tells us he was driving in Harrisburg, PA Saturday when a deer suddenly ran out in front of his car.  Horse says he jerked the wheel, trying not to kill the animal ... but lost control and went careening into a tree.

Zac says he hit the tree so hard the car flipped over -- "I legitimately thought I was going to die."

An ambulance rushed to the scene and hauled the AGT star off to the hospital. He was released later that night with a possible concussion, sore neck and scratches ... but luckily no major injuries.

"I'm just glad to be alive," Horse tell us.

Now, here's Zac crashing into other things:

Make it stop ... "Teen Mom" star Jenelle Evans is officially a wanted woman AGAIN ... after blowing off a court date today in North Carolina.

The 21-year-old MTV reality star was supposed to appear for a hearing in her cyberstalking case, but Brunswick County court officials tell TMZ, she no-showed. The judge then issued a warrant for her arrest.

As we reported, Evans was arrested back in 2012 for allegedly cyberstalking an old roommate/ex-boyfriend.

Jenelle's arrest history is legendary ... just last month she was busted for heroin possession and assault.


2:10 PM PT -- Jenelle just posted $1,000 bond and has been released.

1:25 PM PT -- Jenelle turned herself in about 20 minutes ago.

"The X Factor" is upping the sexy factor -- TMZ has learned Kelly Rowland and Paulina Rubio are signing on to be judges for next season. 

Sources connected to FOX tell TMZ the pair are in final negotiations to join the show ... with only minor details left to be hammered out before they sign on. 

We're told the deals will be done in the next few days, possibly as early as tomorrow.

Rowland and Rubio would be replacing Britney Spears and L.A. Reid ... and joining returning judges Demi Lovato and (of course) Simon Cowell.

A rep for Fox had no comment.

'90s TV actress Carlton Gebbia has high hopes for her upcoming stint on "Real Housewives of Beverly Hills" ... telling friends she hopes to ditch the TV cat fights and empower women instead. Goooood luck.

Sources tell us ... Carlton, who guest starred on shows like "The Young and the Restless" and "Suddenly Susan" back in the day, is definitely joining the cast for season 4. Bravo has yet to confirm it, but our sources tell us it's happening.

Plus, we got Carlton out in L.A. recently and she all but said, "Yes, I'm on the show." Instead she talked about what she WOULD do IF she were on it. Yeah.

The addition should be interesting ... our sources tell us, Carlton's made it clear -- she's "sick of the silly s**t women do" on "Real Housewives" and wants to portray her sex as beautiful, strong and powerful, i.e., no table flipping.

FYI -- Carlton is married to StockCross owner David Gebbia and is reportedly worth about $50 mil.

Just how replaceable ARE "American Idol" judges?  According to "Idol" champ Taylor Hicks ... SUPER DUPER REPLACEABLE.

Taylor was out in L.A. on Friday when our photog asked the season five winner the only interesting thing left to ask about "Idol" ... is it time to replace ALL the judges?

Randy Jackson -- the last remaining original judge -- made his exit after the season finale, and it's been reported that newbie judges Nicki Minaj, Mariah Carey and Keith Urban are all on the chopping block.

But Taylor is unfazed by the "A.I" shake up and believes the "revolving door" of judges COULD be a way to save the slowly dying show.

And in case you forgot who Taylor is, here you go:

Breathe easy, James Deen ... Farrah Abraham is NOT PREGNANT ... not even a little bit, as far as she knows.

The "Teen Mom"-slash-porn-star pre-taped an episode of upcoming conflict resolution talk show "The Test," where producers convinced her to take one -- and it was NEGATIVE. (Trust us, that's a POSITIVE).

TMZ broke the story ... Abraham said she missed her period after making her porno with Deen. She was photographed while plunking down cash for an EPT at the drug store.

But Farrah told "The Test" host Kirk Fox that she never took that test (her explanation was WAY too convoluted to make any sense ... so we're going with "not enough cameras around").

We're told Farrah reacted indifferently. We can relate.

Justin Bieber could have a brand new porn-star neighbor in his ultra-exclusive L.A. community -- 'cause TMZ has learned Farrah Abraham has her eye on a $3 million pad right around the corner from the singer.

We've learned ... the star of "Back Door Teen Mom" was on the mansion hunt this weekend in The Oaks in Calabasas -- an expensive gated community home to stars like Kourtney Kardashian, Travis Barker, Romeo, Keyshawn Johnson, Shanna Moakler and others.

One of the homes that tickled Farrah's fancy was a 4,851 square feet pad with 5 bedrooms, 6 baths ... and a $3,299,900 price tag.

It's unclear if Farrah has already put down an offer ... but with the 6-figures she made from the tape, she could definitely afford the down payment.

The monthly mortgage payments, on the other hand ... let's just say she might need to re-open the back door if she plans on staying here a while.

Rocky's boxing gloves ... Dorothy's ruby slippers ... Indiana Jones' bullwhip ... the bikini Farrah Abraham wore on the cover of her sex tape -- one of these pieces of cinema history CAN BE YOURS!!! --- take a guess which.

Vivid Entertainment -- the porn studio behind the release of "Farrah Superstar: Backdoor Teen Mom" -- listed Farrah's pink crystal-encrusted two-piece on eBay at midnight ... and bids started at $500.

It's pretty hilarious ... the listing advertises the Poolside Collection bikini as "used" -- we're told that means exactly what you think it means: the bikini wasn't washed since Farrah wore it.  Think Monica Lewinsky and The Gap.

In fact, we're told the bikini shows overt signs of wear, including fake tan stains and glitter from Farrah's body lotion.

As the listing goes ... "Farrah's bikini ... straight off Farrah's body and into your hands."

As if your hands won't already be busy enough.

Newly minted porn star Farrah Abraham is so worried James Deen knocked her up while filming their infamous sex tape ... she peed on a stick.

Sources close to Farrah tell TMZ ... the former "Teen Mom" star hadn't had sex in more than a year before James got her ... and the duo didn't wear condoms while filming ... and Farrah wasn't on birth control. Basically all the makings for an after school special.

We're told Farrah recently missed her period and started freaking out, thinking she was growing a little porn spawn.  So she went shopping for a pregnancy test at her local pharmacy.

We're going to go to out on a limb that she's NOT pregnant ... for 2 reasons.

1.  We've seen the tape, and you don't get pregnant THAT way.

2. It's not that James' parting gift went IN her as much as ON her.

"Real Housewives of Beverly Hills" honchos are still on the hunt for fresh "RHOBH" meat, and Casey Kasem's wife tells TMZ ... she's in talks with Bravo to be that meat.

Bravo has tried to keep a tight lid on who will replace Adrienne Maloof and Camille Grammar ... which is why it came as a shock when our photog ran into Jean Kasem in Malibu on Saturday and she casually mentioned a recent meeting with Bravo brass.

As for her "Housewife" cred  ... Jean's been Mrs. Casey Kasem since 1980 and she also starred on "Cheers."