Next time you're at a club in Vegas and Jermaine Dupri is the DJ ... feel free to request a song -- but only if you have $130,000 to blow.

The rapper was spinning at TRYST nightclub at the Wynn Hotel on Saturday ... when some super rich guy -- known as "Su Su" -- dropped $90k on a 15 liter bottle of Ace of Spade Rose Champagne ... plus an extra $40k on other fancy booze.

Sources tell us club honchos were so thrilled about the purchase, they asked Dupri to give Su Su a special VIP shout out. 

Dupri not only obliged ... but he was so impressed with the purchase, he LET THE GUY REQUEST A SONG!!  Which -- if you've ever been to Vegas -- never happens.

It gets better ... "Su Su" was so thankful Dupri actually played his tune -- Pitbull's "Give Me Everything" -- he stuffed an additional $3,800 cash in his pocket as a tip!


"Su Su" tells TMZ ... he was "happy" to throw down the cash because he loves Jermaine and thinks he's a "bomb" DJ.

The lesson here ... always make rich people happy.

Bonus: Su Su also got a free hat for his troubles. FREE HAT!!!

Jermaine Dupri is tax debt free after he recently paid off a giant lien ... but it cost him nearly TWICE AS MUCH as it should have. 

According to docs filed recently in Georgia, Dupri owed $493,818.75 in back taxes he failed to pay for the year 2007. But get this ... the principal was only $254,782.64. Here's what the state tacked on:

Interest -- $91,721.75
Penalty -- $64,969.57
Collection fee -- $82,294.79
Costs -- $50 (why bother?)

The lesson here ... PAY YOUR TAXES ON TIME!

Not only was Jermaine Dupri's mega-expensive Lamborghini repossessed recently -- now, the people who fronted him the cash to pay for it are out for blood ... claiming the producer still owes them $80,000 for the car.

Premier Financial Services filed new legal docs in Georgia Superior Court, claiming Jermaine financed the white 2005 Lamborghini Murcielago in 2006 -- worth $330,000 -- and agreed to make 58 monthly payments of $4,323.

According to the docs, Jermaine dropped $70,000 up front for the car and successfully made the majority of payments -- but for some reason ... he dropped the ball in 2009, and failed to pay the remaining handful.

As a result, PFS repossessed the car and sold it off for $115,000 -- and now they're out for the difference ... insisting they hemorrhaged $79,095 in the deal-gone-wrong, and they're suing Jermaine for their losses.

Calls to Jermaine's rep were not returned.

Jermaine Dupri may need to call his GF Miss Jackson, because he's been nasty!


Dupri is being sued by Aika Kendrick, who claims JD recorded a personal phone call with her and used it on a song without her permission. Kendrick wants $250k for her vocals being used. JD could have hired Paris for half that!

Daz Dillinger and Virgin Records are also named in the suit.

Jermaine Dupri held a VMA pre-party last night.

No shots were fired.

Jermaine Dupri is speaking out about the shooting that took place at the party he hosted in Atlanta, saying, "I'm sad this incident happened because it interrupted a beautiful and loving party. I'm happy none of my people or friends got hurt. And the party continues."

Because why should a small thing like someone getting shot ruin a perfectly good weekend?

This isn't the first time Jermaine has been associated with a club brawl. Back in October 2007 his good friend and fellow rapper Da Brat was arrested for allegedly assaulting a waitress in a nightclub that Dupri owned.

Another incident in 1995 turned deadly when a close friend of Suge Knight was shot and killed following a party Dupri held in Atlanta.

TMZ and a herd of photogs spotted a baby-totin' Isla Fisher yesterday as she left the Mercer Hotel in Soho. A stalker chased Isla while trying to pass off his CD -- and blocked paps from getting a shot -- Isla wasn't havin' any of it. Nearby, Gabriel Byrne walked by Da Silvano -- not giving anything up.


In L.A.: Janet Jackson and Jermaine Dupri arriving separately at S Bar, then leaving together. Kate Hudson finishing a fish dinner at Nobu in Malibu. Jerry Stiller faced photogs at Chateau Marmont, and Lionel Richie drove his lady in a Beemer.

UPDATE: Dupri, who refused to return TMZ's call for comment, issued the following statement to another news outlet:

"Just to set the record straight, I was pulled over because the police said my exhaust pipes were too loud, I had tinted windows and platinum motor plates. Nothing more, nothing less."

OK Jermaine, but it still begs the question, who the hell gets put in the back of a police car for tinted windows?!

For more than a day, TMZ has been asking the L.A. County Sheriff's Department why deputies pulled Jermaine Dupri over and then put him in the back of a cop car before releasing him. The best answer we've gotten from one of the deputies who made the stop -- "It's personal ... it's none of your business."

The rapper and music mogul was pulled over as he drove his Lamborghini Tuesday afternoon in West Hollywood. His passenger was also taken to the cop car and placed in the back. The doors to the vehicle were all wide open when cameras arrived.

A number of TMZ users have been speculating that it's a case of racial profiling. One user wrote, "It's the cops hating again. Paris is going to jail so it's time to start hating blacks driving $250k cars."

A spokesman for the Sheriff would not comment. Interestingly, neither would Dupri's rep.