Hot Vegas

Lonzo Ball's 15-year-old brother, LaMelo, unleashed a sneak water balloon attack on two girls in bikinis -- INSIDE the Vegas home where he's staying -- while wearing a shirt with his own face on it.

Yep.

It all went down Sunday night -- and yeah, Lonzo was inside the home as the water fight broke out. It was a mess. Water everywhere. Ketchup. Craziness.

Unclear if Lonzo is footing the bill for the pad (probably, since he's the only one getting a paycheck) -- but he didn't seem to care as his 15-year-old lil bro destroyed the house.

There was one moment where LaMelo grabbed a loaded pillowcase and swung it at one of the women -- but smartly put it down and splashed her with water instead. Careful, dude.

1:30 PM PT -- Joe says he's out of the hospital and doing fine. As he says, he "got out of it without a scratch." However, his assistant, who was driving, broke his thumb. Joe says they're gonna do lunch at home, and "All is well. Thank God."

Joe Jackson's been taken to a hospital after a car accident near the Las Vegas strip ... TMZ has learned.

Law enforcement sources tell us ... Joe was a passenger in a black Jaguar when it T-boned a red SUV. MJ's father walked into a Panda Express next to the accident scene, and sat down wincing in pain ... according to witnesses.

We're told he was complaining of chest pains and paramedics took him by ambulance to a hospital.

It's unclear who was driving Joe, or if anyone else suffered injuries..

The Wynn Hotel's pissed its X is being whored around Washington, DC -- totally disrespecting their 21-year relationship together ... according to the hotel's new lawsuit.

The Wynn -- which owns XS Nightclub at Encore -- is suing XS Nightclub DC for using a similar logo. According to docs, the Wynn says it's had the XS rights since at least 1996 to market its restaurants, bars and nightclubs ... in this case a club at Encore.

The Wynn says the DC club is misleading customers into falsely believing its club is connected to the Vegas resort -- and, despite a warning back in May, it's still using the logo.

By the way, for its grand opening, the DC joint used the exact logo from the Vegas XS.

X's ... can't live with 'em, can't trust 'em not to hook up cross-country.

DJ Khaled says they didn't want him to succeed at the EDC Festival in Vegas, but EDC organizers say it just ain't so ... and it was only equipment problems that screwed him.

Khaled was, understandably, pissed off when his Sunday night set went to crap -- after repeated sound issues and tons of stalling ... he was eventually booed offstage. Khaled was furious, calling out EDC crew for holding him backstage for 90 minutes while they tried to fix his sound.

Pasquale Rotella -- CEO and founder of Insomniac, which hosts EDC -- says, "Due to technical difficulties beyond DJ Khaled and Insomniac's control, Khaled was not able to perform at his scheduled time on Sunday night at EDC."

Rotella says Khaled was the consummate pro, arriving on time and ready to perform ... so EDC's definitely not blaming him.

A source connected to the festival tells us there was no “sabotage,” as Khaled claimed.

The Golden State Warriors got a bikini welcoming committee at a massive pool party in Vegas this weekend ... proving once again, it's good to be the champs.

Draymond Green, Matt Barnes and JaVale McGee hit up Encore Beach Club Friday ... boozin' on all kinds of alcohol from Don Julio 1942 to Hennessy to Jack Daniel's and Grey Goose -- while chilling in a private cabana.

The Dubs stars also downed a giant bottle of Perrier Jouet Rose as well, 'cause why the hell not?!

Draymond Green, Kevin Durant, Matt Barnes, Damian Jones and even the owners took their NBA Championship party on the road ... to get turnt Vegas style!!

Several Golden State Warriors partied their asses off at JEWEL Nightclub at the ARIA in Las Vegas late Friday and early Saturday morning. At one point, Dave Chappelle joined them for a toast.

The Dubs popped bottles of Moet & Chandon Champagne to celebrate their second title in 3 years -- the first for KD.

2:46 PM PT -- TMZ Sports spoke with Dana White who says the fight will be a 12 round boxing match. Both guys will use 10 ounce gloves. They will fight at 154 pounds.

The fight will take place at the T-Mobile Arena. Ticket prices have not been set yet.

There WILL be an undercard -- it will be boxing and Mayweather Promotions will handle the matchmaking.

We asked Dana if there was a possibility Roy Jones Jr. will fight Anderson Silva -- he told us, "I highly doubt it."

Both Floyd and Conor will be tested by USADA for performance enhancing drugs.

Dana says he expects Conor to make around $100 million for the fight but wouldn't break down the financials.

Dana says he spoke with Conor Wednesday morning -- he's VERY excited. Conor also believes with all his heart he will knock Mayweather out.

IT'S HAPPENING!!!

Floyd Mayweather has signed his deal and will box Conor McGregor on August 26.

Dana White was leading the negotiations for the UFC -- and had vowed to strike a deal with Floyd's camp. Now, the two sides have reached an agreement, as first reported by Yahoo Sports.

Conor and Floyd will square off in Vegas.

Conor posted about the fight on Instagram -- saying, "The fight is on." He replaced Floyd's pic with a shot of Floyd Sr.

Conor has said he expects to make more than $100 MILLION from the fight. Floyd has said he wanted double or triple that. No word on the exact details.

The last time we spoke with Floyd, he laid out exactly why he thinks Conor has a real shot to beat him.

Jennifer Lopez had most of her audience -- including Channing Tatum and Jenna Dewan -- shaking their asses during her closing song ... everyone except Alex Rodriguez.

J Lo belted out "On the Floor" Sunday night to close out her final show in Vegas for the summer. Alex was hanging with Jenna and Channing ... and was, apparently, too intimidated by Mr. Magic Mike to show off his own dance moves.

Even though he's got J Lo, there are clearly limits to A-Rod's confidence.

Can't really blame him after seeing Channing and Jenna's moves.

Sex and trash talk.

That summed up Kevin Hart's poker experience in Vegas -- after he trashed a bunch of poker pros and then banged the table after winning a big hand.

It was HILARIOUS!!

Kev was playing in PokerGO’s Super High Roller Bowl at the Aria in Vegas -- and in his quest for the $6 million grand prize, Hart got locked in an "all in" battle with pro poker player Brian Rast.

Kev promised if he won the hand, he was gonna bang the table.

He won -- and the table got railed.

Celine Dion, Jennifer Lopez, Mariah Carey and the Backstreet Boys are standing firm ... they will all take the stage in Las Vegas despite an ISIS threat to hit the Strip.

We contacted various people connected to all 4 acts, and are told they have not wavered in the wake of an ISIS recruitment video soliciting lone wolf attacks on the Las Vegas Strip.

Security will be ramped up in a big way -- both because of the Ariana Grande concert bombing and the new video -- but the shows will proceed. Celine and J Lo took the stage Wednesday night and will perform again this weekend. The Backstreet Boys are set to perform next month and Mariah shortly thereafter.

That said, if people have purchased tickets but now want refunds because they're afraid to attend, our sources at The Colosseum at Caesars -- that's where Celine and Mariah perform -- tell us people will "likely" get a refund.

As for Lopez and BSB ... Planet Hollywood wouldn't give us a clear answer on the subject of refunds.

Scott Disick's home was almost certainly broken into by someone who knew him and knew the property ... law enforcement sources tell TMZ -- not that Scott seems the least bit concerned.

Our sources say it appears Sunday's burglary was an inside job, because the crook or crooks knew exactly where the security cameras were before breaking into the house through a backdoor because they moved the cameras so they could enter undetected. After entering, they opened a bunch of drawers.

Cops also believe the burglars knew full well Scott was out of town, appearing at a gig in Vegas for his birthday. It was heavily advertised beforehand.

Scott was back home by Sunday around 9 AM, hanging with friends and rambling incoherently. Seemed like the party was still going from Vegas, and he was NOT sweating the burglary.

The break-in comes almost a year to the day from the time Scott was hit the first time ... someone broke into his home and stole some super expensive watches. Law enforcement tells us Scott believes he knew who did it but didn't want to rat them out.

Two of the most famous giant asses in the history of booty came together in Vegas over the weekend -- Blac Chyna and Alexis Texas ... in an event that woulda made Sir Mix-A-Lot blush.

For the unfamiliar ... Alexis is one of the all time porn legends -- who just won "Most Epic Ass" at the 2017 AVN Awards.

And as you can tell by the photos, Chyna couldn't keep her hands off it when they got together at the Sapphire Pool & Dayclub party in Vegas over the weekend.

Butt respect Butt.

Ellie Goulding ran into her ex bf during his gig in "Magic Mike Live," and decided to take him for a ride ... suspended above the stage.

Ellie was sitting front row Saturday at the new Las Vegas revue when her ex, Jackson Williams, pulled her onstage for one of his airborne stunts. You can probably figure it out from the video, but the stunt is called the "air f***."

Sources at the show tell us a bachelorette is supposed to be called up for the segment, but Jackson called an audible and chose Ellie instead. She didn't seem to mind catching up with her former backup dancer turned bf.

We're guessing Ellie felt safe with a guy who's been trained by Channing Tatum himself.

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.

The Bellagio hotel in Vegas was on fire Thursday night ... literally.

Flames shot up from the roof of the hotel/casino, which created chaos on the Strip. The main artery was shut down as the Fire Dept. struggled to contain the blaze.

People inside the hotel were evacuated, but no injuries ... at least none that were reported.

The fire became the biggest show in town, as tourists gawked at the scene.

Rob Gronkowski had a nice quiet weekend in Vegas ... ripping off his shirt and raging with WWE superstar Mojo Rawley while bikini chicks sprayed 'em with champagne ... and we have the video.