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Kevin Hart made such a grand entrance when he dropped on Kai Cenat's "Mafiathon 3" marathon live stream on Monday ... it literally knocked Druski's pants off!

Check it out ... the moment is hilarious AF as Kevin slyly sneaks it between the well-dressed duo chopping it up on the stream with more than a million people watching ... and the two lose their minds!

It gets to the point where Kevin has to tell Druski to settle down -- and pull up his pants -- before he says he wants to redo the entrance with style ... which means dancing to Usher's "Yeah!"

MrBeast's standing by his choice to trap a stuntman inside a burning building for a cash prize ... arguing the guy's a pro and firefighters were on standby ... so, it was all totally safe.

Here's the deal ... the YouTube star recently posted a video which pushed a stuntman to the absolute limit -- firing him out of a cannon, surviving massive explosions ... and even getting tied up in a house before it's lit on fire.

It's this last stunt many people online popped off about ... and, if you watch the clip, it's not hard to see why.

Ne-Yo got pissed at one of his fans who jumped onstage during his show in Japan ... and their encounter even turned physical!

Check out video ... the Grammy-winning R&B star was belting out his hit "Because Of You" in front of a packed crowd at the Glion Arena Kobe in Japan's Kobe City on Saturday when a man suddenly hopped onstage.

Ever the professional, Ne-Yo continues his performance seemingly unfazed as the fan dances up to him before turning to the audience with arms raised. Ne-Yo grabs the fan by the back of the neck and shoves him off stage with the help of security.

Kai Cenat took his massive online audience on a new adventure over the weekend as part of his "Mafiathon 3" marathon live stream ... and despite how the event would have been to most -- the streamer was cool as a cucumber the entire time.

That's right ... Kai went skydiving, and like pretty much everything else he does on live ... his millions of stream followers were along for the ride ... or fall, rather.

Prior to the jump -- apparently KC's first ever -- his friends and staff held a prayer that he be protected ... and it must've worked ... 'cause the jump went perfectly.

Karlie Kloss is a model mother ... and, she's got her hands -- and chest -- full with her newborn in new pics she shared to Instagram Sunday.

The former Victoria's Secret Angel shared several photos with her daughter, Rae, who was born just a couple weeks ago ... including one where Mom's in a facemask while breastfeeding her little one.

KK's grinning wide here ... beaming after welcoming her third child with her husband, Joshua Kushner.

Selena Gomez ain't the only one who got married this weekend -- content creator Catherine Paiz tied the knot with tattoo artist Igor Ten!

The couple got hitched Saturday, with Igor confirming the exciting news by sharing a clip to his Snapchat of the pair celebrating in a car just after walking down the aisle.

Check out the video -- the newlyweds are elated and go in for a kiss after Igor exclaims, "We made it!"

Sugar Ray's Mark McGrath might be re-thinking his all around the world status ... 'cause he got mooned on his recent flight!

The singer posted about the strange experience on his Instagram Story ... explaining he was on a flight from London to Dallas, Texas and got quite the view -- another person's butt crack!

He said the passenger was even woken up as he unknowingly mooned the entire flight ... and according to Mark, "gave zero f**ks."

Well, that's surely a flight Mark won't forget ... though he may want to.

It's not clear when the flight took place, 'cause on Saturday, he appeared at The LADYWORLD festival in Florida.

Cardi B’s not getting on bedrest just yet ... she’s still performing shows -- taking the stage in Central Park with a bulging tummy!

The rapper played the Global Citizen Festival in NYC Saturday ... and, she jumped onstage in a very tight top that accentuated the curve of her pregnant stomach.

Check out the clip ... Cardi strides around the stage ... rapping her track “Outside” which just came out earlier this year. She ain’t lipsyncing either BTW -- she’s changing up the tempo and proving she’s giving this show 100% effort.

Katie Thurston's sending a message from beyond the virtual grave ... 'cause she's joking that since social media says she's dead, it must be true!

The former Bachelorette shared a clip on Instagram Saturday morning ... thanking randos on Facebook for alerting her friends, family and even herself that she'd passed away after her battle with breast cancer.

She says she's got a message while up in paradise -- chilling with her pal God -- for all of us still holding on tight to the mortal coil ... before plugging a casket company she says won't charge insane marked-up fees.

Welcome to TMZ Tap-In -- your go-to hot spot for all things Gen-Z! We're scouring the internet up and down and keeping tabs on Gen-Z news n' goss ... and the celebs Gen-Z hates to love and loves to hate! TMZ's spillin' the tea into your laps ... it's piping hot, so scroll with caution 🫖!

From social media creators Charli D'Amelio and Khaby Lame to actors and musicians like Zendaya, Timothee Chalamet, Billie Eilish ... you name 'em, there's no need for FOMO 'cuz it's all right here!

Wellness and beauty trends, crime and lifestyle will also be right at your fingertips ... Y'all ready?!

This week, the feud heard 'round the Gen-Z world: Cardi vs. Nicki! The internet is keeping tabs on Cardi's new album, "Am I The Drama?" and Week 1 sales ... The question is, will it trump Nicki Minaj's previous projects?! Tracking ends tonight, so give us your thoughts:

Sydney Sweeney ain’t the only one rocking killer jeans -- Katie Couric’s got them too, serving up a hilarious take on the infamous American Eagle ad in full denim vibes!

Check out Katie’s take -- 'cause yeah, it screams Sydney, even with the "speaking of genes" nod ... but it was for colon cancer screenings advocacy, with the camera panning out to show her rocking a hospital gown under that denim jacket, lounging on a gurney like a pro.

Still, Katie brought the full Sydney-style smolder, looking straight at the camera while dropping the facts: most colon cancer cases aren’t genetic, which is why docs say everyone 45+ should get screened.

The 'Transformers' movie villain Megatron was caught on camera at Universal Studios Hollywood this week urging a fight between parkgoers, shouting “Fight! Fight! Fight!” ... instead of breaking up the brawl.

Viral video shows the popular theme park character engaged in total bad guy behavior, encouraging people in a crowd who seemed ready to get into a physical altercation ... as he stands by in his designated meet-and-greet spot, cackling with evil laughter.

This isn't the first time the actor voicing the popular vehicular villain has turned on his human fans ... the character is known for picking on the park's guests when they pose next to the robo for photos.

A girl who looks a lot like Celeste Rivas was spotted at a D4vd concert in late August ... and if it's her, it would really close the window on when she died.

Check out this footage from the singer's August 23 or August 24 concert in Silver Spring, Maryland ... there's a girl watching from a balcony off to the side of the stage ... and she resembles Celeste.

The Department of Homeland Security's Pokémon-themed video showcasing immigration arrests is going viral ... but the folks at Pokémon are not giving it their stamp of approval.

The clip shows federal law enforcement agents taking suspects into custody as the Pokémon theme song plays ... and the edit features scenes from the hit TV show ... but it sounds like the feds did this all on their own.

A rep for Pokémon Company International tells TMZ … "We are aware of a recent video posted by the Department of Homeland Security that includes imagery and language associated with our brand. Our company was not involved in the creation or distribution of this content, and permission was not granted for the use of our intellectual property."

10:57 AM PT -- DHS has since taken down the video.

Theo Von's support for Donald Trump might be waning ... he's pissed the administration used his face to promote Immigration Customs Enforcement deportation videos!

The popular podcaster specifically targeted Trump's Department of Homeland Security in his Tuesday night post on X, saying he never approved being included in the spot.

Theo also asked DHS to send him a check for using his likeness and to "please keep me out of your 'banger' deportation videos."

Jimmy Kimmel has finally spoken out after his late-night show's suspension ... and hours before he's set to return to air.

Check out his post on Instagram... it's a photo of him posing with Norman Lear, and he captioned it with a simple, "Missing this guy today."

Why is he missing Norman, you may ask? Well ... Norman was a huge proponent of the First Amendment and most known for his comedy series, "All in the Family," which was the first sitcom to touch on political and often controversial topics.