TMZ.com

Kim Kardashian was a combo of business and smiles as she arrived at a Paris courthouse Tuesday to testify against the 10 people accused of tying up and robbing her at gunpoint of more than $10 million worth of jewelry nearly a decade ago.

The reality star rolled up in a black van with her mom, Kris, to the courthouse in the French capital Tuesday afternoon for her big day on the witness stand. After the two stepped out of the vehicle, Kim flashed a grin and waved at supporters gathered outside the building.

For her day in court, Kim was dressed in a black suit jacket with a matching skirt and Alaia sunglasses. She was also rocking plenty of jewelry -- earrings, a large diamond necklace and a huge ring -- which is a middle finger to the people who allegedly stole from her.

Cassie is ready to take the witness stand in Diddy's sex trafficking trial ... and it sounds like it may be happening as soon as Tuesday ... at least based on what her lawyer is telling us.

We got Cassie's attorney Douglas Wigdor outside the federal courthouse where Diddy's trial is going down and he told us she will be testifying "in very short order."

Cassie's name was brought up several times during opening arguments and the first day of witness testimony ... including when prosecutors claimed Diddy made a male sex worker urinate in her mouth during a "freak off" she was forced to attend.

The first day of witness testimony in Diddy's sex trafficking trial is in the books ... and TMZ is recapping all the notable moments from a busy day in court.

After the full jury pool for the federal criminal trial was selected Monday morning -- 12 jurors and 6 alternates -- the prosecution came out swinging in their opening statement, claiming Diddy made a sex worker urinate in Cassie's mouth during a "freak off" sex party.

The feds allege Diddy forced Cassie and another woman to participate in "freak offs" with male sex workers ... and they also claimed Diddy got violent with the women and sexually assaulted his former assistant.

Cassie paid a male dancer to have sex with her while Diddy watched and Diddy told them they didn't have enough baby oil on their bodies ... at least according to the dancer's court testimony.

The prosecution's second witness in Diddy's sex trafficking trial Monday was a male dancer who said Cassie paid him thousands of dollars to have sex with her on multiple occasions at different locations, all while Diddy watched and directed the erotic sessions.

The dancer told the jury he and Cassie used baby oil every time they had sex. He also testified Diddy once complained about a lack of baby oil ... telling them to slow down and separate.

Kim Kardashian arrived in Paris, France today on a private plane ... but not for a jet-set luxury visit -- she's set to testify tomorrow in a long-delayed trial, after she was robbed at gunpoint in the biggest jewelry heist in France in decades.

Kim flew into Paris-Le Bourget Airport Monday afternoon ahead of Tuesday's hearing -- a group known as the "Grandpa Robbers" is charged with stealing more than $10 million in jewelry from her at a fancy hotel in the city in 2016.

Kris Jenner is of course not going to let her daughter relive this traumatic experience alone, as her and her boyfriend Corey Gamble also showed up in Paris today for support.

Kim was visiting back then to attend Paris Fashion Week ... and at about 3 AM on October 3, two armed robbers overpowered a security guard outside her Hôtel de Pourtalès apartment. She was bound with zip-ties and duct tape, then deposited into a bathtub, as two masked men took her jewelry -- including a $4-million engagement ring given to her by then-husband Kanye West.

A bunch of New Yorkers are straight-up celebrating not having to sit through Diddy’s sex trafficking trial -- and they’re making sure TMZ knows it.

Four dismissed jurors were thrilled to be off the hook -- telling us Monday outside the NYC courthouse it was a huge stress relief and they’re just glad they don’t have to miss work or lose a paycheck over it.

Catch the clip -- the first guy made it clear he was happy that it was outta his hands, especially since he knows how high-stakes it all is, having already seen the Cassie hotel beating video.

Diddy offered a hotel security guard a stack of money to keep quiet about the Cassie beating ... at least according to the guy's court testimony.

The first witness called to the stand in Diddy's sex trafficking case Monday was the assistant director of security at the InterContinental Los Angeles Century City at Beverly Hills Hotel ... and he was grilled about the infamous 2016 incident between Diddy and Cassie.

The witness, Israel Florez, says he got a report of a woman in distress on the 6th floor around 11 AM and checked the cameras ... and saw Diddy pacing back and forth.

Misa Hylton, the mother of Diddy's 2nd oldest son, Justin Combs, was among the Team Diddy family members showing support at his sex trafficking trial on Monday ... with a little extra assistance from a walker.

The 52-year-old fashion designer and stylist was spotted consulting with Justin outside the Manhattan courthouse in a plaid blazer and comfortable walking shoes.

You can see her moving slowly as she joined the rest of Diddy's family ... but she was quickly swarmed by paparazzi photographers as she hobbled along.

Diddy looks like he's leaning on his faith as he goes on federal trial for sex trafficking ... because he was reading from the Holy Bible in court.

The Bad Boy Records founder had a Bible at his table Monday and was reading scriptures before opening statements from the prosecution and his defense team ... according to folks in the courtroom.

Diddy had a lot of family supporting him, including a bunch of his kids, and the Combs family looked stoic as federal prosecutors laid out their case against him ... with the fam showing no emotion whatsoever.

Diddy's defense says jurors are going to hear about swinger parties and all sorts of NSFW topics in his sex trafficking trial ... but they say the jury is not there to judge Diddy for his sexual preferences.

Opening statements are underway, and the defense is ripping into the prosecution.

Diddy's defense attorney, Teny Geragos, is handling the opening salvo for the music mogul's side and she says the case is all about love, jealousy, money, and Diddy's private sex life ... scoffing at the idea that Diddy was engaging in sex trafficking and a racketeering conspiracy, as the feds claim.

Diddy made a sex worker urinate in Cassie's mouth during a "freak off" ... at least according to federal prosecutors, who came out swinging in court.

Opening statements are underway in Diddy's sex trafficking trial in New York City and the feds are laying out their case against the Bad Boy Records founder ... making some graphic allegations.

Assistant United States Attorney Emily Johnson is running point for the prosecution right now, and she told the jury Diddy forced Cassie to have sex with male escorts while he watched and recorded.

The federal criminal trial of Sean "Diddy" Combs got underway with opening statements Monday morning shortly after the final jury pool was seated ... and we've got details about the 12 members and 6 alternates.

The jury consists of 8 men and 4 women, and the alternates are 4 men and 2 women. All are identified only by number and will remain anonymous. The jurors are not sequestered -- they'll be allowed to go home every night, with strict instructions to avoid news coverage of the trial and the internet ... and not to discuss the case with anyone else.

During last week's jury selection, we got some insight into each individual from their questioning on the stand and the questionnaire each filled out.

The full jury pool for the federal criminal trial in NYC of Sean "Diddy" Combs has officially been selected ... there are 12 jurors and 6 alternates and opening statements are set for Monday morning.

That pool has been whittled down from more than 45 candidates ... and we have the final list, approved by Judge Arun Subramanian.

This morning as court proceedings began, the prosecution and defense teams began calling out their choices of individuals to strike. Diddy's defense attorney Marc Agnifilo noted prosecutors struck 7 Black people, noting a "pattern." AUSA Maurene Comey pointed out the prosecution's reasons, including individuals' issues with law enforcement, knowledge of the case, limited English -- even one accused of having an "agenda." The judge denied the defense's challenge, determining the exclusions were not based on racial discrimination.

Diddy’s fam pulled up to court in full force Monday -- locked in, loyal, and leaving no doubt they’re riding with him as his criminal trial gets underway.

The rapper’s kids -- Quincy, Justin, and twins Jessie and D’Lila -- rolled up hand-in-hand to the NYC courthouse, with his mother Janice and baby mama Dana Tran right behind them.

None of them said a word as they walked in -- dodging questions and brushing past flashing cameras. Diddy’s legal team wasn’t far behind ... check out what they had to say in the video.

It's the second week of Diddy's sex trafficking trial and there are some big milestones on the schedule today ... including seating a jury and opening statements from prosecutors and the defense.

Jury selection is up first this morning ... there are 43 jurors still to go through and the goal here is to pick 18 from the huge pool -- 12 jurors and 6 alternates.

Diddy's defense says this should be quick and easy, and there are 16 preemptive challenges to pare down the jury pool ... 10 for the defense and 6 for prosecutors. These challenges allow for prospective jurors to be excluded without an argument from the other side.

Mark Geragos and Harvey Levin sound like an old married couple ... bickering over what really went down in chambers with the judge in the Diddy case.

As we reported, Geragos was called on the carpet for his comment on last week's "2 Angry Men" podcast, referring to prosecutors as a "six-pack of white women." Judge Arun Subramanian essentially said if he crosses the line again, he'd be open to citing him with contempt.