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Add James Harden to the list of NBA players showing support for Meek Mill ... 'cause the Houston Rockets superstar visited the rapper in prison on Tuesday and says "his spirit is high."

Harden took some time in-between games to visit Meek at the State Correctional Institution in Chester, PA and reported back on social media.

"Got a chance to see my bro Meek Mill today. His spirit is high and hopefully we can get him out by February," Harden wrote.

"Told me to tell y'all when he get out he got some (fire) for y'all."

Sources connected to Meek tell TMZ Sports ... the NBA star had some special "Free Meek" sneakers whipped up and plans to rock them on the court on Thursday when the Rockets play the Celtics.

As we previously reported, Joel Embiid and 76ers owner Michael Rubin visited Meek last month and said he was doing well. Colin Kaepernick also spoke with Meek and said Meek was "humbled" by the support.

10:55 AM PT -- A rep for Cardi tells TMZ, the "sex video" isn't real ... it was all a joke. We're told they weren't actually banging, and were fully clothed in the video.

Cardi B doesn't seem to care about cheating rumors going around about her fiance Offset, because she just posted what REALLY looks like a live sex video of the two of them.

A video of what appears to be Cardi and Offset doing it doggy style -- which reportedly 1st aired on Cardi's Instagram Live -- has surfaced online. In the clip, Cardi says, "I don't got no more in me left. You gotta give a whole hour" ... as Offset's back there thrusting away.

Unclear if what they're doing is real or not -- you can't see the bottom half here, but it sure looks like they're banging. That seems to be what they want people to think, anyway.

Offset made some headlines this weekend after video allegedly belonging to him leaked, showing off a naked woman that many people said wasn't Cardi. She appeared to laugh that off though, saying she was still banging him.

Sylvester Stallone just paid a visit to a powerful criminal defense lawyer, but not because he's going on the defense.

Stallone and his civil lawyer, Marty Singer, showed up Friday afternoon at the law offices of Blair Berk. We're told he's there because Berk is assisting him in filing a police report against the woman who claimed he raped her back in 1990.

Calvin Harris paid homage to Steve Angello ... actually, he paid him millions of bucks for his home.

Calvin bought Angello's 4 bedroom, 4.5 bath L.A. home for $5.045 million, and got a deal, too ... the home was originally listed for $5.5 million.

The two have been friends for years and we're told Calvin was sold on the crib since it had a recording studio. It also has a pool, guesthouse and 18-foot ceilings with glass walls, so Calvin can get inspiration looking out into the canyons.

The house is right under the Hollywood sign ... which is kinda awesome.

Turns out Santa Claus is real, and he's black, and he plays for the Washington Wizards -- because John Wall just got into the holiday spirit by buying Rolex watches for ALL of his teammates.

We talked with some peeps over at Govberg Jewelers in Philadelphia who tell us Wall came to them some time ago with the idea to cop Rolex President Day-Date watches for every member of the Wiz squad.

BTW -- these watches retail around $40k -- and the Wizards have 16 guys on the roster, so that's around $640k worth of yuletide.

Before you start to feel bad about the sweater you got your sibling, Wall signed a $207 million extension with the Wiz back in June, so y'all definitely aren't the same.

Diplo typically earns big money for his DJ sets, but Wednesday night he helped raise cash at a mini festival ... with Rosario Dawson and Eric Andre watching.

The Mad Decent label head wasn't even on the flyer for the 2nd annual 'LA Gives Back' concert, but surprised the 2,300 fans who packed Union nightclub. Other DJs like Ookay, Valentino Khan, and Ghastly pumped up the crowd from the venue's 5 stages.

We're told Rosario and Eric were in the crowd. Unclear if it was a date, since they reportedly broke up 3 weeks ago. We know they helped the fundraising effort by hitting up the merch booth.

The event raised $60k to help 2 L.A. shelters -- My Friend's Place and the Downtown Women's Center.

French Montana is more than just a baller, he's also a softy when it comes to impressing the ladies ... something Evelyn Lozada learned right off the bat when they hooked up.

Well connected sources tell TMZ ... French had a private chef whip up a fancy meal at his L.A. crib for his first date with Evelyn. No group date, this was dinner for 2 with some CÎROC French Vanilla on the side, of course. Gotta rep for his brand.

We're told Evelyn and the rapper met through mutual friends, and have been hanging out for a few weeks, but are far from "exclusive" ... for now. One source says she's finally ready to get back in the dating world.

A Katy Perry fanatic has been arrested and ordered to stay away from the singer at all times after he told a cop he'll "do whatever it takes" to be with her ... TMZ has learned.

Pawel Jurski -- a 37-year-old man from Poland -- appeared in a Miami criminal court Thursday and faces felony charges of aggravated stalking and escape ... and misdemeanor charges of loitering and resisting arrest.

Jurski allegedly tried to bum-rush the stage through a security area at Perry's concert at American Airlines Arena in Miami Wednesday night, but was stopped by security and held until cops showed up to arrest him.

According to the police report ... Jurski's been to at least 6 of Katy's shows in different cities in the past 20 days and has tried to contact her at each stop. When asked if he would harm Perry, Jurski replied ... "I will do whatever it takes to be with Katy Perry."

He also told cops while he was in Chicago, he secretly followed Katy to a steakhouse to surprise her.

Christmas came early for A-Rod ... 'cause the ex-MLB superstar just unwrapped his brand new PRIVATE JET -- and it's awesome!

We're told Alex Rodriguez got rid of his old LearJet 60 a while ago ... and decided to upgrade with a Gulfstream IV.

According to people familiar with the planes, Alex's new jet has DOUBLE the flight mileage capacity as the old jet ... which means it's better for international travel.

And get this ... the jet seats up to 14 people -- perfect for Jennifer Lopez and her kids!

The new Gulfstream was delivered to Alex in Florida on Wednesday with his A-Rod Corp. company logo painted on the tail ... just in time for the holidays!

Sarah Hyland put CVS on blast for leaving her hanging on crucial meds she needed, but the pharmacy is firing back, saying the mix-up was her own damn fault.

Sarah tore into CVS earlier this week after she said a Studio City location never notified her to pick up her medication before closing time ... as she claims they promised they would.

She also called them out for allegedly posting the wrong hours on the Internet. Based on her post, it appears she pulled the hours from a maps app.

And therein lies the problem, as they say. We're told CVS learned Sarah did use a 3rd party search engine to find those hours -- but did NOT check the actual CVS website. That site displays the correct pharmacy closing time ... 9 PM.

The L.A. Rams have been crushing it on the field ... but what they just did for a local homeless family is the most amazing thing they've done all year.

Here's what happened ... Tavon Austin and Robert Quinn wanted to do something extra special for the holidays, so they teamed up with the LA Family Housing charity to find a well-deserving family to gift a fully-furnished, 4-bedroom apartment.

The lucky recipient is Shwonna Cox and her 6 children ... who lost all their belongings in the wildfires. Shwonna is an employee at USC, but was having trouble getting back on her feet.

But get this -- not only did Austin and Quinn put a roof over their heads ... the Rams hooked up Shwonna's new crib with a Christmas tree AND presents under the tree.

Check out the video ... Shwonna's kids go CRAZY when they see their new stuff.

Donald Trump Jr. crossed the line of decency by posing with a giant cookie frosted with a Barack Obama caricature ... this according to a pissed off Dallas restaurant owner.

Stephan Courseau owns Le Bilboquet, the French eatery where the photo op went down, and he tells TMZ ... he never would have allowed the cookie to see the light of day. He says the frosted image -- attempting to recreate Obama's "Hope" posters -- is laced with racist overtones.

Some critics have said it looks like a "racist minstrel show on a cake of Obama."

Jr. held up the cookie while posing with Ted Cruz, and it drew immediate backlash. Courseau says his regular customers flooded him with calls, asking how he allowed this to happen.

Courseau says he wasn't at the private event, and his manager left shortly before the cookie was brought out. He says he's disgusted and understands customers being angry. He is too.

Washington Redskins safety Su'a Cravens is threatening to sue cops in Virginia -- claiming he was racially profiled and roughed up during a recent traffic stop ... and he's got video of the aftermath.

TMZ Sports has confirmed the 22-year-old safety was pulled over by the Loudoun County Sheriff's Dept. on Nov. 29.

According to official records, Cravens was cited for going 39 in a 25 and also for having illegal tint on his windows. He has a court date set for January 26.

But, Cravens says the entire situation is BS -- claiming he was only pulled over because "I'm black. I've got tattoos on my neck. I'm out here in a nice car."

Cravens says he was put in handcuffs and made to sit in a squad car while officers searched his whip for marijuana.

Cravens says the cops found nothing. He was eventually released and flipped on his camera phone -- showing the officers he claims roughed him up.

Don't tell Fetty Wap ya can't mix business with pleasure ... because doing just that put a huge grin on his girlfriend's face.

The rapper surprised his girl, Yaya, Sunday at her Omaj by NoiR clothing line launch party in Ridgefield Park, NJ. The outerwear collection is slated for a spring release but friends and family got a preview along with a $100k surprise from Fetty.

He proudly announced he's sinking that chunk o' change into her biz ... after he performed and walked the runway for her.

"Love & Hip Hop: New York" star Mariahlynn hosted the event, but Fetty definitely stole the show.

Danica Patrick is officially single ... her 5-year relationship with NASCAR driver Ricky Stenhouse Jr. is over after the guy publicly pumped the brakes when it came to marriage.

How do we know? Because Danica shared her frustration about the relationship situation back in July.

Here's the deal ... 35-year-old Danica had pulled an April Fool's gag on social media claiming one of her rings was an engagement ring.

So, when we saw Danica and Ricky out we asked if there was any movement on the engagement front. She told us Ricky had not proposed but added, "I was ready yesterday."

That day never came ... and now the relationship is over.

Multiple ESPN staffers tell TMZ Sports they're in complete shock over John Skipper's sudden resignation and admission of substance addiction ... with everyone we spoke with telling us he was extremely well-liked.

We spoke with people from all facets of ESPN -- current talent, producers and past employees -- and the sense we get is that no one saw this coming.

As one current ESPNer tells us, "People are just stunned ... a lot of us truly respected him."

"You will be hard pressed to find anyone with a negative word about him."

Another staffer told us, "I'm shocked. I liked the guy a lot."

Moments ago, Dan Le Batard went on the air on his ESPN show and got emotional talking about how much Skipper has meant to him.