Will Smith Kisser I APOLOGIZE I Just Got Emotional

RAPPER TRINA Accused of Torpedoing Missouri Concert

Rapper Trina allegedly cost a concert promoter THOUSANDS of dollars this month ... after no-showing at a performance in St. Louis ... but Trina insists the promoter's full of crap.

According to the docs obtained, the rapper was paid $7,000 to perform at a club called Imperial Palace in St. Louis on May 19th.

According to the letters, Trina's team informed the promoter there was a scheduling conflict -- but the rapper never formally canceled in writing, so the promoter went full steam ahead with the event.

Needless to say, May 19th rolled around -- and Trina was nowhere to be seen. 

The promoter says, the event went on without Trina -- held as a regular party at the club with DJ music -- but people were pissed ... and several demanded refunds.

Now, the promoter tells us, she's planning to sue Trina for at least $16,000 -- which includes Trina's $7,000 fee, promotional costs, and other damages.

Trina's rep said, the rapper did agree to perform the gig -- but cancelled long before the event due to other obligations ... and even tried to return her $7,000 advance. Trina's rep says the promoter refused to accept it.

What's more, Trina's rep believes the promoter falsely advertised the event as a Trina concert, knowing in advance Trina wouldn't be performing. Trina's rep says the rapper is now weighing legal options of her own.

NEWS!!! 2 Chainz Arrested At New York's LA Guardia Airport

Rapper 2 Chainz wasn't packing brass knuckles when he was arrested today in New York ... it was just a harmless 4-finger ring -- this according to sources close to the hip hop star. The ring says "DOPE" in big letters, 2 Chainz rocked it no problem at an Atlanta club called the Velvet Room on Sunday. According to sources close to the rapper, Chainz then flew to NYC without incident -- with the ring in his luggage -- but when he tried to leave the city today, TSA at LaGuardia Airport mistook the jewelry for a dangerous weapon. 2 Chainz was arrested at the airport for possession of a criminal weapon this afternoon when officials found the 4-finger instrument in his bag. 2 Chainz is still in custody. The Port Authority PD had no comment.

[VIDEO] USHER Breaks Down in Court Over Bad Dad Allegations

Usher broke down in tears today in an Atlanta court -- after his ex-wife's attorney insinuated he cares more about partying than he does about his children. Usher was on the stand for hours today in his ongoing custody trial with his ex Tameka Foster -- and during questioning, Tameka's lawyer whipped out photos of the singer partying in Europe in February. Usher's fighting for more custody with his kids -- but Tameka's lawyer was trying to prove he'd rather go wild at a nightclub than be a good dad. Usher was also grilled about his alleged drug use. The singer admitted to smoking pot in the past, but when the subject turned to his alleged ecstasy use Usher's lawyer objected. Usher insisted he never used drugs in front of the children -- an allegation Tameka made early in their custody fight -- but hedged on the subject of seeing his children while under the influence. The trial will continue tomorrow.

[NEWS] YOUNG BUCK Heading to PRISON for Gun Possession

Young Buck won't be a free man much longer -- The reports are that the rapper has agreed to serve 18 months in prison for gun possession, following a massive IRS raid on his Nashville home in 2010. According to the deal, Buck agreed to plead guilty to possessing firearms and ammunition as a convicted felon. According to legal docs filed in the case, federal agents recovered the firearms in Buck's house during a 2010 raid -- when feds busted into the house to repossess a bunch of the rapper's belongings to settle a $300,000 tax debt. According to the docs, feds found a .40 caliber Glock 22 in Buck's home along with ammunition. As a convicted felon, Buck is prohibited from possessing ANY kinds of firearms. As for the felony rap -- Buck was convicted of assault with a deadly weapon after stabbing some guy at the Vibe Awards in 2004. The judge signed off on the plea deal already but won't formally sentence the rapper 'til July 13th.