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Cassandra Waldon, the very first "Big Brother" contestant to enter the house on the U.S. version, has died.

Cassandra passed away on September 25 ... apparently from injuries related to a car accident in Rome. A source at the United Nations -- where Cassandra worked -- tells TMZ ... she was struck by a car about 2 months ago, and suffered a head injury. We're told she never regained consciousness before her death.

Julie Chen, the host of "Big Brother," remembered Cassandra as a standout houseguest from the debut season in July 2000. Julie posted on Instagram, "Thank you for bringing your intelligence, warmth and wisdom to the Big Brother house Season 1."

She is the answer to the trivia question -- who was first to walk into the 'BB' house? That's kind of a double-edged sword ... as some fan blogs also point out she was first to fall victim to the so-called "First to Enter Curse."

No one who's entered first -- on the U.S. or Canadian (non-'Celebrity') versions -- has ever won the competition. Cassandra finished 6th out of 10 houseguests.

Cassandra worked at the UN as its Director of Communications for the International Fund for Agricultural Development. She was living and working in Rome when the accident happened.

We're told her funeral will be held next weekend in her home state of Maryland. Cassandra was 56.

Stacey Dash will NOT be prosecuted in her domestic violence case ... cause TMZ's learned her case has been dropped.

Prosecutors tell TMZ they dropped the case because the injury -- a single scratch -- was minor and there's no way of knowing if Stacey caused it. Prosecutors also say if Stacey had any physical contact with her husband it was "incidental" on her part.

TMZ broke the story ... Stacy was busted last weekend in Florida for domestic violence after getting into a squabble with her new husband, Jeffrey Marty. We obtained the 911 call in which you hear Stacey tell the operator she's being assaulted by her husband.

Mama June's home where all sorts of bad and crazy things happened is on the market, and you won't believe how it's been rehabbed.

As we reported, the Hampton, GA home is where June's BF, Geno, got in his car wasted, drove in the gated community and ended up crashing into their driveway. He was so intoxicated he had to be carried into the house.

It's also where June and Geno had a massive garage sale. The pics showed the house in shambles.

Well, check out the digs now. It was almost like 'Extreme Home Makeover,' where contractors came in for 3 days and made the house look brand spanking new.

Evander Holyfield is just a few weeks shy of his 57th birthday ... but he's still ready to throw down -- and will fly to Japan for a charity exhibition in 2020.

Holyfield hasn't fought professionally since May 2011 (he beat Brian Nielsen) -- but "The Real Deal" says he's kept himself in prime shape ever since and he's ready to get back in the ring.

The details about the exhibition fight are unclear but Holyfield says he still thinks he's got the at signature knockout power.

Don't get it twisted, Holyfield says the goal is to raise money for people in need -- and not to annihilate his opponent -- so the bout will be more of a performance than a no-holds-barred fight.

"The big thing is to give people in Japan the opportunity to see the only 4-time heavyweight champion of the world."

In related Holyfield news, Evander's 21-year-old son Evan "Yung Holy" Holyfield is about to make his pro boxing debut on the undercard of the Canelo Alvarez vs. Sergey Kovalev fight.

Evan is taking on Nick Winstead in a 4-round junior middleweight matchup.

"Yung Holy" previously told TMZ Sports he thinks he can be better than his Hall of Fame father.

"My dad always tells me every generation gets better. It's pretty much easy to believe, number one it's in the bible, and the bible don't tell no lies."

Justin Bieber took a bling cue from the Kardashian clan -- opting to use their private jeweler to gift himself a super-rare watch that's worth a pretty penny.

Sources tell us that the gold watch JB debuted on Instagram Monday -- which he called "a lil wedding gift" for himself -- is actually quite exceptional, in that it's from a rare, vintage luxury line of watches ... with this one retailing somewhere in the 6-figure range.

The watch is an Audemars Piguet Royal Oak 5402BA, a line that dates back to the 1970s ... and that isn't really made all that much anymore. Current models of AP Royal Oaks have an average price tag of around $50k ... but we're told JB's was worth at least double that.

Now, it's unclear if Justin ended up paying that amount himself -- but if he wanted to auction off the timepiece ... he could probably get in the ballpark of $100k, and possibly more.

Stacey Dash says her husband and his 3 kids conspired to have her arrested ... to cover up her husband's alleged brutality.

TMZ broke the story ... Stacey called 911 Sunday, claiming her husband put her in a chokehold. When cops came out, they observed scratches on husband Jeffrey Marty's arms -- this, along with statements from his kids, got her cuffed and booked for assault.

Stacey says in the 911 call Jeffrey coached his 15, 14 and 10-year-old on what to say to cops. At one point, Stacey accuses Marty of faking his injuries, claiming he was taking photos of scratches on his arms ... scratches she didn't inflict.

Ray Lewis is OUT of "Dancing with the Stars" -- the NFL Hall of Famer suffered an injury while practicing a Cha-Cha .. and his castmates are already sending their love.

The 44-year-old Baltimore Ravens legend and his partner Cheryl Burke were rehearsing for their tribute to "Ferris Bueller's Day Off" when Ray tore a tendon in his foot ... just like he did during his playing days.

Of course, the whole thing played out during the broadcast of the show Monday night -- when Lewis revealed he tore 3 tendons in his foot and would need surgery.

"In a game in 2010, I tore a tendon in my foot," Lewis said on the show ... "And, now, all of this dancing, all of this on your toes, I’m reliving a problem that I thought I’d never have to live again."

"I am having so much fun when it comes to the dancing part. But, the part behind the scenes, it’s just been painful. It’s bothered me a lot."

"When [the doctor] read that MRI to me today, I knew something was wrong."

With LaMelo Ball reportedly open to signing a shoe contract outside of the Big Baller Brand, TMZ Sports has learned Nike has a serious interest in working with the 18-year-old.

Our Nike sources tell us ... the company is actively scouting the youngest Ball brother and even has a scout in Australia monitoring him as plays pro ball overseas.

We're told Nike has not made a formal offer at this point, but the interest is real -- and we're guessing the fact Melo has been rocking Nike shoes lately is a good sign for the Swoosh.

Of course, things could get dicey with LaVar Ball who says he's deadly serious about reviving the Big Baller Brand after a disastrous first run.

Some Eagles and Packers fans got into an all-out brawl in the stands at Lambeau Field on Thursday night ... and cops tell TMZ Sports some of the fighters were taken to jail.

At some point during the Philly-Green Bay game on "Thursday Night Football," fans in Eagles jerseys started wrestling with fans in Packers jerseys.

The brawl got pretty intense ... punches and kicks were thrown -- and bodies were dragged all over the bleachers.

Eventually, cops came in to break it up ... and a Green Bay Police Dept. spokesperson tells us the three main culprits in the brawl were all arrested.

Aubrey O'Day says she was shocked and disturbed when an American Airlines employee made her turn her shirt inside out in front of the entire plane, but as with most social media rants ... there's another side to it.

The Danity Kane singer took to Twitter Thursday night to put a male AA flight attendant on blast, claiming he treated her "like a punished lil child in timeout the entire flight" after making her undress in front of everyone because he "didn't like my shirt."

She also named the guy and called for the airline to fire him.

Witnesses on the flight tell TMZ ... there's more context to her story. We're told O'Day was boarding the plane while wearing a black shirt with bold white letters across the front, spelling out the word "F**k" ... uncensored.

"Million Dollar Listing New York" star Ryan Serhant isn't just hawking a behemoth ranch in Colorado ... it's practically a chunk of the United States!!!

Serhant's truly testing his battle cry "expansion ... always, in all ways" by getting his hands on one of the most epic real estate listings you'll ever see. It's the Gateway Canyons Ranch, and it currently belongs to Discovery Channel founder John Hendricks.

It's listed at a whopping $280 million and it oozes luxury. The main house alone is 22,000 square feet. It features 8 bedrooms, 8 bathrooms, 4 floors with an elevator, infinity pool, movie theater, planetarium and, get this, its own fossil room!!!

Former 'Real Housewives of Atlanta' star Peter Thomas is pulling the plug on his North Carolina sports bar ... and it's all because the place is dealing with some tax issues.

According to federal records, Peter's Sports One Bar and Lounge in Charlotte was hit with a tax lien for nearly $237,000 ... and now the establishment is closing its doors after racking up a huge debt.

Sources close to Peter tell TMZ ... the bar didn't have enough money to stay afloat after committing funds to other projects, and the place fell behind on its taxes. We're told Sports One Bar and Lounge will be shuttered for 3 to 6 months while Peter and the bar's legal team clear everything up and pay down the debt.

It's been a rough year for Peter ... as we first reported, he was arrested in Miami back in March on an out of state warrant for allegedly writing a $4,000 check that bounced.

Another allegation of sexual misconduct has come up against Antonio Brown ... this time, the artist who was hired to paint a mural in his home says AB had sex with another woman in front of her while she worked.

The artist, who has not gone public with her identity, was previously featured in a Sports Illustrated article about Brown, in which she claimed the WR got naked and hit on her while she was working at his home in 2017.

In the article, the woman says she declined his advances and felt he was being completely inappropriate ... but never went to cops or took any legal action against him.

After she went public, Brown allegedly sent her a series of menacing text messages as part of a group chat ... instructing associates to look into her personal life. AB included a photo of the artist's children, which she took as a clear threat.

In fact, the artist's attorney, Lisa J. Banks, sent a letter to the NFL saying her client is "understandably frightened by these text messages, which are clearly intended to threaten and intimidate her."

In the letter, Banks rehashes the initial sexual misconduct allegation featured in the SI article ... but then drops this additional allegation.

"What is not detailed in the story is that Mr. Brown engaged in other forms of sexual misconduct during the two days that she worked in his home, which included Mr. Brown having sex with another woman while the artist was working in the same room."

The NFL immediately launched an investigation into Brown -- who was cut the by the New England Patriots a short time later.

Justin Bieber had a needle in his arm as he walked the streets of Beverly Hills, but it's actually the picture of health.

Justin cruised out of a medical building Wednesday and Thursday with an IV bag, our sources tell us he was there for a vitamin drip.

In case you didn't know ... aside from curing hangovers, vitamin drips improve immune health, boost energy levels, abate depression and anxiety, improve mental clarity and cognative function, reduce migraine symptoms, combat fatigue and maintain muscle strength.

And, there's more TMZ-MD, the IV's typically contain high doses of vitamin C or magnesium.

One treatment often costs around $120.

It's not without danger. Kendall Jenner was hospitalized last year after she had a bad reaction to a vitamin IV drip.

New York Yankees star pitcher Domingo German has been placed on administrative leave while Major League Baseball investigates allegations of domestic violence.

A source tells TMZ Sports the alleged incident happened earlier this week after the Yankees returned from their road trip in Toronto. We're working on more details.

For their part, the Yankees have announced they fully support the MLB's decision saying, "We support this policy which reinforces that domestic violence has no place in our society and cannot be tolerated."

"We have followed the lead of Major League Baseball and will continue to provide our complete cooperation throughout the investigative process."

Under MLB policy, German's stay on Administrative Leave can last up to seven days ... although the league has the power to extend that timeline.

German has been a stud for the Yanks this season, winning 18 games with 153 strikeouts in 143 innings.

The 27-year-old just pitched for New York at Yankees Stadium on Wednesday night ... throwing 2.1 innings and giving up just 1 hit and no runs.

He was expected to be relied on heavily when the Yanks kick off their run toward their 28th World Series championship this October.

Story developing ...

Nick Carter says his brother, Aaron, has left him with no choice but to seek legal protection after he claims Aaron threatened to kill Nick's pregnant wife and unborn child ... though Aaron says he'd never harm family.

According to the temporary restraining order obtained by TMZ ... Aaron has to stay at least 100 feet away from Nick, Nick's wife, their kids and other family members, specifically their residence in Las Vegas.

Nick says both he and his sister were forced to seek the order against Aaron, "In light of Aaron's increasingly alarming behavior and his recent confession that he harbors thoughts and intentions of killing my pregnant wife and unborn child."

A rep for Aaron tells us, "I am astounded at the accusations being made against me and I do not wish harm to anyone, especially my family."

Aaron responded to Nick on social media after he filed the restraining order, saying he should send a cease and desist letter while he's at it. Aaron adds he hasn't seen Nick in 4 years, and they ain't planning on a reunion.

As we've reported ... Aaron's family has been super concerned with his mental state lately, and the singer has raised concerns over his own mental stability.

Nick says, "We love our brother and truly hope he gets the proper treatment he needs before any harm comes to himself or anyone else."

Aaron appeared on "The Doctors" and at least from the show, it seemed like he's suffering from anxiety, schizophrenia, multiple personality disorder and manic depression -- another term for bipolar.

L.A. County Sheriff's deputies recently went to Aaron's Lancaster, CA home for a welfare check ... and he claims they visited him again over the weekend and tried to place him on a 5150 psychiatric hold.

Aaron's been flaunting his gun collection -- he says he owns a 9mm handgun, 2 assault rifles and other firearms -- and we've learned cops are looking into an obscure law that could be used to take his guns away.

Aaron came on "TMZ Live" Tuesday disputing the notion he's struggling with his mental health, and telling his family to leave him alone.

Clearly, the feeling is mutual.