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Kevin Federline claims Britney Spears was seriously "Toxic" ... literally, for her children.

K-Fed alleges the Grammy-winner drank alcohol while pregnant and on medication in an excerpt from his book, "You Thought You Knew," obtained by People.

Kevin writes, "That mix was... dangerous. F----d up, honestly ... You’re not supposed to drink when you’re on meds like that. A couple of glasses of wine for her would hit like a whole bottle because of the medication.”

Lil Nas X is on the 'Old Town Road' to recovery ... in his first public appearance since wandering the streets naked and allegedly charging at police officers in Los Angeles.

The 26-year-old Grammy winner popped up in L.A., rocking the heck out of a jean jacket and cowboy boots as he ran errands in Santa Monica. He looks healthy and well-rested ... even spending some time in a local park before heading off in a white Jeep.

This comes after undergoing inpatient treatment, following his bizarre August 21 arrest.

Liam Payne's been gone for a year, and we're marking his loss with a video retrospective of some of the singer's most iconic moments through the years.

Check out events ranging from his days as a member of One Direction to his journey across his solo career ... and a clip recorded in the aftermath of his tragic death at the age of 31.

Kevin Federline has dropped another bombshell Britney's way ... claiming she did cocaine during the same time she was breastfeeding their kids.

In an excerpt from his new tell-all, "You Thought You Knew," obtained by Variety, Federline recalls walking in on her, witnessing her doing coke and getting into a huge fight that led to their divorce.

He claims she was supposed to be home with their sons Sean Preston and Jayden James, but showed up to his 2006 release party for "Playing With Fire."

Charlie Puth just revealed big news in his "Changes" music video ... he's going to be a dad!

Check out the video that just dropped today ... the 33-year-old singer-songwriter stands next to his wife, Brooke Sansone, both placing their hands on her belly as they stare into each other's eyes and walk off together.

Charlie teased the baby news in an October 8 Instagram post, describing the song as the "perfect way to bring all of you into the most beautiful, colorful part of my life, which happens to be right now. You will soon know why..."

Kevin Federline says Britney Spears bangs on the first night ... at least in his experience.

Britney's ex-husband recalls their first sexual encounter in his upcoming memoir, "You Thought You Knew," and he says it happened the night they met.

Kevin says he was introduced to Britney at a Hollywood nightclub in 2004 and writes ... "The moment I sat down, everything else kind of just faded into the background. It was just me and her."

Nicki Minaj is rushing to Britney Spears' defense as Kevin Federline makes bombshell claims about their relationship ... and she says K-Fed is a "b*tch."

In a since-deleted post on X, Nicki called out Britney's ex-husband, saying ... "KEVIN FEDERLINE B*TCH WHEN I CATCH U."

Nicki was quote-tweeting Britney's X post about "constant gaslighting" from Kevin that was "extremely hurtful and exhausting."

Britney Spears' former dancer -- the one who Kevin Federline claims hooked up with the pop star while they were dating -- is addressing the media "Circus" around her ... though she's keeping tight-lipped about the exact nature of their relationship.

Teresa Espinosa posted about the gossip mere hours ago ... writing entertainment sites have reached out to her since the claims surfaced, asking for comment -- so, she decided to comment publicly, for all to see.

In her caption, Espinosa acknowledges she danced alongside Spears during the In The Zone promo and The Onyx Hotel Tour ... during which she experienced the "chaotic energy" of Britney's life -- with paparazzi constantly shooting her.

Jennifer Lopez has no plans to jump "On the Floor" with Bad Bunny during the Super Bowl LX Halftime show ... admitting he hasn't reached out to her yet -- but, she's definitely interested!

The singer-songwriter appeared on "Watch What Happens Live With Andy Cohen" Wednesday night ... and, she made it clear there have been no talks between her and the Puerto Rican hitmaker.

However, J Lo adds she'd make an appearance if Bad Bunny wanted her to ... so, the ball is firmly in his court.

Gene Simmons drove headfirst into a parked car in Malibu and it looks like it's lucky he didn't drive off a cliff and into the ocean ... according to video TMZ obtained from his recent car crash.

The KISS rocker's SUV delivered the brunt of the damage to a truck that was parked along Pacific Coast Highway ... as you can see, the truck's hood is bent and crumpled, while Gene's Lincoln Navigator looks mostly unharmed.

Gene's wife Shannon told us her husband fainted behind the wheel and drifted across a couple lanes of traffic before crashing into a parked car ... and based on what's in the aftermath video, it looks like Gene would have gone over the bluff, onto the beach and possibly into the ocean if he didn't hit this truck.

Looking for some Halloween inspiration?! You've come to the right place, 'cuz Canadian rapper-singer bbno$ is shelling out some dope looks for Spooky Season ... and we've got the hottest and greatest just for you 😘!

From 'SpongeBob's Patrick Star ... to the video game, 'Borderland's, Moxxi ... bbno$ may be 'bout the "no money" however these looks are straight up, MONEY!

Fly into dope cosplay like Sonic the Hedgehog -- quick as light and such a bada**!

Taylor Swift's treatin' her fans like livestock, one prominent journalist says ... 'cause she says the pop star's milking the Swifties like they're a bunch of cows!

Ashley Bornancin -- a TV journo who hosts the popular show "Behind the Headlines" -- joined us on "TMZ Live" Wednesday ... and, she said this album is not the show-stopping hit that she and many other fans were expecting.

Take a listen for yourself ... Ashley says the album feels rushed -- and, she jokes it's almost like T-Swift spent more time promoting the album than actually working on the tracks.

Kevin Federline says Britney Spears is raising tons of red flags since her conservatorship ended ... and he says her sons and family are alarmed with what they're seeing from her.

Britney's ex-husband joined us on "TMZ Live" Wednesday and we asked him if he thought it was a mistake to end the conservatorship.

Kevin says everyone in the family -- including Britney's two sons Sean Preston and Jayden James -- are concerned for her well-being and he says his new memoir, "You Thought You Knew," is a cry for help to gain support for Britney and their kids.

Beyoncé is mourning D’Angelo ... taking to her website to honor the Grammy-winning R&B neo-soul icon after his death from pancreatic cancer.

Hop on Beyoncé's site and it zips through her "Cowboy Carter" tour shots ... before landing on a photo of D’Angelo paired with a heartfelt tribute.

Beyoncé praised his music, voice, piano chops, and artistry -- calling him the pioneer of neo-soul who transformed rhythm and blues forever ... adding that no one in the biz will ever forget him.

Eric Bellinger’s still buzzing from the weekend’s "TMZ After Dark" tour -- fresh off his Capitol Records deal, dude was celebrating and moonlighting as a tour guide.

Check out the vid ... TMZ ran into Eric Tuesday, and he couldn’t stop raving about the tour -- saying as a born-and-raised Angeleno, it was cool flexing as a guide while also low-key playing tourist at spots he’d never even visited himself.

We swung the convo back to his big signing ... Eric clarified he’s actually with Capitol Music Group’s legendary TAMLA label, freshly revived under the one and only producer Rodney Jerkins.

Justin Bieber's got the moves on the stage and the court ... the Biebs made a one-in-a-million trick shot, and it was all caught on camera.

Check out the video ... the 31-year-old Grammy winner kicks a futsal ball -- basically a smaller soccer ball designed for indoor games -- into a basketball hoop from almost half-court. The insane make had his teammates swarming him for a hype celebration.

Spectators at SRGN Studios in Los Angeles on Tuesday also went nuts, immediately taking out their cameras to get a shot of the Biebs. They were gathered there to watch a match for The League -- a celebrity sporting competition co-founded by its commissioner Ron Abaekobe.