"Pawn Stars" pays BANK ... just ask Chumlee ... who dropped thousands of dollars on an expensive new pair of boobs for his girlfriend, TMZ has learned.

Sources close to Chum tell us, the perky new breasts were a recent birthday gift for his gf Tanya -- but that wasn't all he got her.

We're told Chumlee also rented out a penthouse suite for him and his lady at the D Casino hotel last weekend, paid for several lavish dinners at the hotel's Andiamo steakhouse -- including one attended by Tanya's 11 girlfriends -- and even arranged fancy limo rides through Vegas for her and her family.

And get this ... after dinner Saturday night, Chum hit up the high-limit blackjack table ... where the minimum was $500 per hand.

Chumlee tells us, "I wanted it to be the best birthday ever for her and was happy to be a part of a great party, celebration, and special gifts."

Hehe ... special gifts.

The guys from "Pawn Stars" struck it rich with their hit show  -- and then turned their backs on the agents who brokered their initial contracts ... that according to a new lawsuit filed by the jilted talent agency.

The suit, filed by Venture IAB in L.A. County Superior Court ... claims all 3 Harrisons and Chumlee inked deals in 2007 and 2009 for the agency to represent them -- before "Pawn Stars" started airing on The History Channel.

According to the suit, in January 2010 -- 6 months after the show hit the air -- another agent and 2 'Pawn' execs ... convinced the cast to terminate their deal with Venture IAB.

In the suit, Venture claims the execs -- Mary Donahue and Nancy Dubuc -- "intended to disrupt" the agency's deal with the guys so their "friend and agent" could sign them.

Venture IAB is suing The History Channel, the agent and the execs for more than $5 million in damages.

As we previously reported, a very similar suit was filed by an ex-manager -- but that one named the Harrisons and Chumlee as defendants.

Dear "Pawn Stars" stars ... next time you're gonna TRASH your campground, make sure there are no cops around ... because in the State of CA it's a misdemeanor crime!!!

Rick and Corey Harrison -- a.k.a. the pawn shop boss and his son -- went camping in Glamis, CA over Thanksgiving weekend with some friends ... problem is, we're told they left the place a mess.

Law enforcement sources tell TMZ ... cops discovered A TON of trash where the History Channel stars camped out ... specifically beer cans, garbage and a bbq grill ... enough to fill up 10 TRASH BAGS.



FYI ... We're told cops KNEW the reality TV stars were the ones camping in the trash spot -- and causing the mess -- due to a previous encounter that weekend.

Dumping trash in the campgrounds is illegal and NOT taken lightly ... in fact, we're told law enforcement slapped the guys with a huge fine ... to the tune of $1,000 a person ... and that's NOT negotiable.

Corey Harrison tells TMZ, "We left the campground before our buddies did and they were to clean it up and apparently didn't follow through.  My father nor I were cited."

Rick, Corey, the Old Man and Chumlee ... are all getting their asses sued by their ex-manager, who claims he discovered the "Pawn Stars" and made them famous ... only to get stabbed in the back.

The man behind the lawsuit is Wayne Jefferies -- who claims he found the guys from Gold & Silver Pawn back in 2007 and got them a reality TV show deal with A&E and the History Channel ... after Rick had struck out in the past.

Jefferies claims things were going great for years -- with the show killing it in the ratings and the guys all cutting various endorsement deals ... including credit cards, slot machines, books and even an energy drink.

But according to the suit, things fell apart earlier this year .. when network honchos became upset over a story Jefferies claims he leaked to TMZ. The story detailed how the "Pawn Stars" cast was blindsided when they learned A&E had commissioned a "Cajun Pawn Stars" spinoff.

In his suit, filed by powerhouse attorney Richard A. Schonfeld, Jefferies claims network execs pressured the "Pawn Stars" cast to cut ties with Jefferies ... which they did.

Jefferies is now suing the "Pawn Stars" guys for breach of contract ... and he's also suing A&E, the History Channel and various execs for interfering with his management deals.

Jefferies is asking for unspecified damages. Calls to the Pawn Stars and the networks have not been returned.

Chumlee from "Pawn Stars" was involved in a crazy -- and bloody -- fight right in the middle of Hollywood Blvd. this weekend ... but the reality star tells TMZ it was all in self-defense.

A video has surfaced showing Chum and his pals hanging out in front of Chum's Rolls Royce ... when they are approached by an unknown man.

Chum tells us ... the guy was harassing the group and demanding a ride in the Rolls. When Chum's group refused, Chum says the man threatened to pull a gun.

Chum says the man then reached for something in his pocket ... so his boys took action, socking the guy in the face HARD ... dropping the man to the pavement.

Once the guy hit the floor, Chum and his crew scrambled to get back in the car and quickly fled the scene ... while the man tried to pick himself up, blood pouring out of his face.

Chum tells TMZ, "Instinct just took over. [The man] didn’t even know I was on TV or anything … just wanted to ride in our car and start problems.”

So far, no word on the identity of the victim or his current condition.

"Pawn Stars" has been very VERY good to Chumlee ... 'cause the reality star hit the Hollywood club scene last night in a pimped out Rolls Royce ... complete with a VIDEO GAME system in the back.

A perspiring Chum was on his way out of MyStudio with some friends ... when he crawled into the back of the super-expensive ride ... grabbed a Playstation controller ... and gave us the play-by-play.

"We got FIFA going" ... Chum said ...adding, "It is what it is ... we play Playstation in the Rolls Royce!!!"

Somewhere ... the Old Man is shaking his head ...

The debut of the new "Cajun Pawn Stars" was a huge hit with the History Channel ... but TMZ has learned the guys at the original "Pawn Stars" show are PISSED because they had no idea it was being made.

Sources close to Left Field Pictures -- the production company behind "Pawn Stars" -- tell us the Vegas crew feels "blindsided" ... because they only learned about the show a few weeks ago ... when the network made the official announcement.

We're told Chumlee, Rick, Corey and the Old Man insist they were promised by the network that no "Pawn Stars" spin-off shows would be made of any kind ... and now feel like they were betrayed.  

Sources say the guys are "really hurt" by the whole thing and feel like the new show is a "total knock-off" -- but their beef is with the network ... and NOT with the cast of the new show.

Pretty shocking behavior by the network -- considering "Pawn Stars" is the number one show on History and one of the highest rated shows on cable.

No official comment from the "Pawn Stars." Ditto for the History Channel.

"Pawn Stars" bad ass Corey Harrison suffered a bloody case of road rash ... when he wiped on his Harley during a ride from Vegas to San Diego this weekend ... TMZ has learned.

Sources tell us ... Harrison and a friend were halfway through the 10-hour cruise ... when they got caught in some intense rain around Joshua Tree ... and Corey lost control of his bike.

We're told the bike slid out from under the reality star and skidded off the road. Harrison scraped his arm up in the wreck, but suffered no major injuries.

The bike wasn't so lucky ... suffering damage to the handlebars, windshield and scrapes ALL OVER.

We're told repairs are expected to run Corey about $3k. Good thing he can afford it.

Chaz Bono has proven to be an inspiration to the guys over at "Pawn Stars" ... at least when it comes to a Halloween costume.

TMZ has learned ... Chum Lee will transform into Chaz for one of his Halloween parties this year ... chin strap and all ... and he's totally fired up about it. 

Don't worry -- we're already working on getting the pictures.

It was destroyed in a blazing inferno last week -- and now TMZ has obtained pictures of its smoldering remains ... the History Channel's famous cherry '57 Chevy.

TMZ broke the story ... the car -- which became the centerpiece in a massive three-show special involving "American Pickers," "American Restoration," and "Pawn Stars" -- burst into flames last Friday.

But thankfully, these guys are pros -- and as we previously reported, they had the car completely repaired in a few hours.

The Las Vegas toy expert often featured on "Pawn Stars" has been named in a police report -- by a woman who claims Johnny Jimenez choked her and held a knife against her throat ... and she tells us, he also threatened to kill her.

Law enforcement sources tell TMZ ... Las Vegas Metro PD received a call from a woman claiming to be Johnny's girlfriend. The woman says she had been in an intense verbal argument with Johnny at his home ... when things escalated and Johnny got physical.

We're told the argument began when Johnny accused the woman of stealing $1,000 from him.

The woman told police Johnny choked her pretty hard -- leaving several marks around her neck and chest. The woman also claims Johnny grabbed a knife at some point in the argument and held it against her throat.

TMZ spoke to the alleged victim who tells us ... Johnny was threatening to kill her during the argument and she feared for her life when Johnny put the knife against her throat.

We're told the woman met with police after the incident -- and filed a formal complaint. An ambulance was also called to check out her injuries.

Police are investigating the incident -- and we're told cops would like to speak with Jimenez ASAP.

TMZ spoke with a staffer at Johnny's toy shop, who tells us the woman was Johnny's housekeeper -- not his girlfriend.

The alleged victim insists she and Johnny have been dating since March -- and claims she was only cleaning his home as a favor.