Nurse!

Danielle Bregoli says there is one obvious reason she's NOT the girl who's getting beat to a pulp in a viral video ... and it's all about the victim's butt.

It's not hard to understand the confusion -- Danielle and the punching bag in the video do look extremely similar. It's unclear where the video was shot, but fact is "Cash Me Outside" has been here in Los Angeles.

We got her at LAX, and she explained why that ain't her getting dragged in the vid. As she puts it, size matters when you're talking booty and bodyguards.

Meanwhile, Danielle's look-alike is gonna have a serious headache ...

UFC rising star "Platinum" Mike Perry says he knows the devastating right elbow he used to K.O. Jake Ellenberger could've ended the guy's career ... but it hasn't fazed him one bit!

Perry joined the guys on the "TMZ Sports" TV show (airs Monday night on FS1) and told us he met with Ellenberger after and thinks he'll bounce back, but if he doesn't ... so be it.

Perry is a monster in the Octagon -- he's 10-1 with all 10 wins coming by way of KO/TKO.

He's also only 25 years old.

Elton John has canceled multiple shows due to an illness that has dogged him for several months ... sources familiar with the situation tell TMZ.

We're told Elton has canceled shows between now and May 5 at The Colosseum at Caesars Palace in Vegas, where he's performed for years. He's also canceled a gig in Bakersfield, CA.

A rep for the singer says Elton recently contracted a "harmful and unusual bacterial infection" during a flight home from Santiago, Chile. We're told Elton underwent treatment immediately and has been told by doctors to rest.

Elton is expected to make a full recovery and will hit the stage again June 3.

Zlatan Ibrahimovic vows to return to professional soccer after his recent knee injury -- and he posted a photo of his insanely vascular legs to make his point.

The Manchester United star destroyed his knee Thursday -- and the team is describing it as "significant ligament damage." There are reports it's so bad, the 35-year-old might never play again.

But Zlatan says that's a bunch of crap ... he'll be back.

In a social media post, Zlatan acknowledged he'll be "out of football for a while" ... but added, "I will go through this like everythings else and come back even stronger."

One of Kim Zolciak's sons is in the hospital recovering from an operation after he was bitten by a dog this weekend.

Kim posted a pic Sunday of 4-year-old Kash Kade Biermann in a hospital bed, with a pretty gnarly description. Apparently, he's been there since Saturday night after he was bitten by a dog ... which sent him to the operating room.

In the post, Kim says Kash suffered "traumatic injuries" and the operation lasted a couple hours.

The whole family seems to be there by his side. Kim noted she'd be missing her guest spot on Andy Cohen's show Sunday night.

Machine Gun Kelly's concert was delayed when severe chest pain forced him off stage to get medical assistance.

MGK grabbed at his chest multiple times while performing at Seminole Casino in South FL ... and eventually couldn't stand the pain anymore. He walked off in the middle of doing his hit, "Bad Things."

According to Kelly's reps, paramedics had to come check him out at the venue. It wasn't a heart issue ... turns out Kelly was injured while shooting the movie "Captive State" a day earlier. We're told he's doing some of his own stunts on the flick, and as he described it ... got "punched in the chest 65 times."

Unclear what the diagnosis is -- broken ribs or just bruised -- but MGK toughed it out, and finished the show. He was still in pain though, and gladly accepted (*cough cough*) herbal remedies from a fan.

Rajon Rondo rocked a short sleeve suit jacket to the Bulls game Friday night ... and we gotta say -- kinda swag!!!

Ronda is currently nursing an injured thumb and has a cast on his right hand that might prevent him from fitting his arm into a regular full sleeve.

So, he made an adjustment and went short-sleeved ... and totally pulled it off!

Watch out, NFL ... it looks like Cleveland Browns star Gary Barnidge is ready to open a can of whoop ass this season ... and his first victim is a PRO WRESTLER!!

The Pro Bowl TE teamed up with his buddy, DeAngelo Williams, to take down Impact Wrestling star Davey Richards Thursday night ... and Barnidge destroys him with a devastating body slam.

The vid is great ... Barnidge and Williams really get into it and celebrate the victory by joining the fans in Moose's trademark chant.

Remember: Don't try this at home, kids ... leave it to the pros.

Richard Simmons just came home from the hospital ... with a little help from the LAPD, and under the cover of a blanket.

Simmons checked himself in on Monday for gastrointestinal issues. He returned home Thursday afternoon ... but there was a problem. Simmons longtime housekeeper called the LAPD and said she was followed by paparazzi, and ended up driving into the garage and hiding because she believed they might be on her property.

Cops arrived and found Richard and the housekeeper inside the garage in his Range Rover. They formed something of a human shield -- and Richard threw a blanket over his head -- and went inside the house.

Richard Simmons is back to doing what he does best -- delivering inspiration to his fans, and he's also hinting he'll come out of hiding soon.

Richard addressed his hospitalization this week for gastrointestinal issues, saying it "reminded me that when you need help you can't be afraid to reach out and ask for it."

He continued ... "I reached out and hope you will too. I'm sure there are people in your life who love and care for you and would do anything to help you with the challenges you face."

He posted a pic with his message -- though it appears to be an old shot -- and thanked fans for well wishes and added he should be back home in a couple of days.

As for the future, he said ... "Hope to see you again soon!"

Richard Simmons went to the hospital Monday for "severe indigestion" ... according to his rep.

Richard had been battling "discomfort while eating" for several days, and finally decided to get treatment at a hospital on Monday.

His rep, Michael Catalano, told ABC News ... Richard was already doing much better and expects to make a full recovery.

Our sources say the "gastrointestinal issue" wasn't serious enough for an ambulance, and Richard's people drove him to the hospital.

This is the second time in the last year Richard's had to leave his home -- where he's been sheltered for years -- for hospital care. Last summer, he was at Cedars-Sinai for 3 days after his housekeeper said he'd become incoherent.

His people said that was a case of dehydration ... which seemed weird for several days of treatment.

We now know why the woman injured at a Tyga concert persisted in collecting money even though Tyga's company has made it clear they don't want to pay her ... she got really messed up.

Shyanne Riekena already won a judgment against Tyga's company for injuries sustained when a light stand came crashing down on her, leaving a 4-inch gash on the top of her head.

As we reported ... Tyga's music company got slapped with a $236,000 judgment but failed to pay. Now, with interest, the judgment has swelled to $250k.

Shyanne says she's been suffering for 5 years and is indignant Tyga's business won't own up.

Richard Simmons is "perfect," and "happy," but he's still dealing with a knee problem that has kept him in virtual hiding for the last 3 years ... that's the takeaway we got from one of his closest friends.

A woman named Denise -- who says she's known Richard for 35 years -- was at Richard's gate delivering flowers where she said the former fitness guru is doing great.

But then she says Richard's been dealing with a medical issue for years -- his knee. TMZ broke the story back in November, 2014 -- 8 months after Simmons just disappeared -- that he had 2 bad knees and an operation on the first was so painful he was delaying the second.

It seems that based on what Denise is saying ... Richard was bedridden for a time because he never got the second knee operation. Unclear if he's gotten it done yet.

The woman 50 Cent punched square in the chest is now going full bore against the rapper ... lawyering up for a lawsuit.

Donnetta Derr has a law firm behind her that will sue 50 early next week. She'll also sue The Lox, with whom Fiddy performed, and the venue, Baltimore Soundstage.

TMZ broke the story ... 50 was performing last week when the woman grabbed his arm and pulled him off stage. 50 retaliated with a vicious punch.

Donnetta later went onstage and twerked ... leading people to believe the beef was squashed ... nope.

Attorney Warren Brown tells us Donnetta went to the hospital the next day and hired him Monday.

Brown calls 50's conduct "cowardly."

Another attack on a United Airlines flight, and this time it was a scorpion that got its revenge on a passenger.

Richard Bell was on a flight from Houston to Calgary Sunday when a scorpion reportedly fell from an overhead bin and stung him. The flight crew contacted a doctor on the ground for medical advice.

United says his injuries were non-life threatening and medical personnel took care of Bell when he landed in Calgary.

United flight attendants are shocked David Dao was brutalized and bloodied because police could have prevented any injury if they had a clue about the plane they boarded.

We spoke to several United employees who say the officers should have known the armrests on those seats are movable. Remember, Dao's head slammed into the armrest, causing at least some of his injuries.

The flight attendants point out the cops could have effortlessly lifted the armrest before forcibly removing Dao ... who appeared to get hung up on the middle seat armrests before hitting the one on the aisle.

The employees we spoke to made it clear they believe Dao should've been removed, but they're fuming at how it was handled.

United's CEO says they're reviewing its procedures in these situations, but flight attendants think it's the police who need more training.