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Justin Timberlake apparently made a boatload of $$$ for his performance during the grand opening of the Fontainebleau Hotel in Vegas Wednesday, but he triggered a hotel war by staying overnight at the Wynn.

Justin shared a pic after his big appearance at Fontainebleau's big event, strolling down a hotel hallway with his wife, Jessica Biel. Thing is ... something looked off.

Social media sleuths noticed the hallway isn't part of the Fontainebleau ... it's the Wynn! So dude got a reported $6.1 million from the Fontainebleau and chose to put his head on a Wynn pillow.

The folks over at Wynn found JT's post irresistible ... re-posting the pic on the hotel's IG with the caption, "where everyone ends up."

Wynn's post has been taken down, but point well made!

We checked with Fontainebleau and although rooms Wednesday night were not available to the public, they were available to the celebs, including Justin, who attended the grand opening.

The feud between Fontainebleau and Wynn has been brewing for a while. Wynn had accused Fontainebleau of poaching its employees, so this was payback.

8:10 AM PT -- A source close to Madonna says doors were at 7:30 PM, her opener, DJ Honey Dijon went on at 8:30 and then Madonna was scheduled to hit the stage between 9:30 and 10.

Our source says there were issues with the audio, so it further delayed Madonna's start time ... she eventually hit the stage around 10:45 and gave a full show.

Madonna was more than fashionably late to kick off the North American portion of her world tour ... and frustrated fans were quick to unload on the "Material Girl."

The singer was scheduled to start her Barclays Center show in Brooklyn Wednesday night at 8:30 PM -- the first U.S. stop of her "Celebration" tour -- but as the clock ticked past to 10:30 PM, fans started getting restless in their seats, and started ripping Madge on social media.

One person shared a view from their seats, with everyone impatiently waiting for the show to begin ... and another tweeted, "I don't give a f*** if you're Madonna, if you're 3 hours late, you're just f***ing rude."

Another angry fan claimed the whole crowd started chanting "bulls***" as the hours kept going by ... with a separate person writing, "I WANT A REFUND NOW."

Around 11, Madonna ended up starting the show ... and tardiness aside, she still put on a helluva performance with her huge catalog of hits -- and it looked like the crowd was having a blast as the late night went on.

BTW, a source close to Madonna confirms to TMZ that the delay was due to sound issues ... and we're told claims she was 3 hours late are impossible.

Still, 2.5 hours late was enough for fans to express themselves!

Taylor Swift hit the Big Apple in a big way with her A-list friends to celebrate her 34th birthday Wednesday night ... but her boyfriend Travis Kelce couldn't be by her side because of the whole mandatory football practice thing.

The 12-time Grammy Award winner galavanted around Manhattan with BFF Blake Lively, first grabbing some grub at Freemans before heading over to The Box nightclub to party.

At Freemans, Taylor and Blake were photographed exiting their SUV and walking hand-in-hand inside the restaurant. Both were dressed in all black and looked absolutely stunning.

Taylor was in a mini dress accentuating her legs and Blake was sporting a leather ensemble with knee-high boots.

After their meal, the two made their way to The Box nearby ... and that's when all the fun really kicked off as Taylor's famous friends dropped in for her Bday bash.

Celeb attendees included ... Gigi Hadid, Zoë Kravitz, Miles Teller, his wife Keleigh Sperry, sisters Este and Alana Haim and Antoni Porowski.

But, one person was glaringly missing from the soiree -- Taylor's hunky boyfriend, Travis Kelce.

Travis had a very good excuse for skipping out ... the Kansas City Chiefs tight end had mandatory football practice for his upcoming game Sunday against the New England Patriots.

As we previously reported ... the couple got in a pre-celebration with his mom, Donna Kelce, and his QB, Patrick Mahomes Sunday night.

2:54 PM PT -- Luke Combs just unveiled his own tumbler, going for $20 a piece on his website ... and as promised, all proceeds will go to Nicol Harness and her family.

Luke Combs is shooting down his own $250,000 lawsuit against a Florida woman who was selling $20 tumblers with his likeness -- he says he didn't know about it, and is now taking steps to help her financially.

The country music star says he was unaware his team was going after the woman in court, and, in a video he posted Wednesday morning, he says it made him sick to his stomach when he woke up to headlines about her plight.

The lawsuit was filed in an Illinois federal court, and it roped in Nicol Harness, who says she was selling $20 Luke Combs tumblers on Amazon ... and only making $380 total. She says she didn't know she was being sued until her Amazon account froze and she learned a judge ordered her to pay $250K.

Luke says he got in touch with the woman and she told him she could not access $5,500 in her Amazon account ... and he's promising to send her double that amount, which is $11K.

What's more, Luke says he's going to start selling his own tumbler and give the proceeds to Nicol ... because she suffers from congestive heart failure and has tons of medical bills.

Luke says he pays a company to go after large-scale counterfeiters of his merchandise ... and he's not sure how Nicol's tiny operation got swept up in the lawsuit.

Nicol says she started selling the tumblers this year after going to a Luke Combs concert ... and he says he's inviting her to an upcoming show so he can also apologize in person.

The lawsuit is still playing out in court, but Luke makes it seem like she won't have to fork over $250K when the dust settles.

Lance Bass and Joey Fatone are bringing some *NSYNC flair to New York City, where they performed at a holiday party, and probably fueled reunion hopes and dreams by singing some of the group's hits.

The singers showed up at the Bilt Rewards Winter Holiday House Party Tuesday night at Maxwell Social in Tribeca -- and over 350 guests including Bilt Rewards Founder & CEO Ankur Jain were entertained by the surprise duo, who jumped on the mic to sing tracks like "Bye Bye Bye" and "Tearin' Up My Heart."

And, since 'tis the season ... Joey and Lance also took some time to sing the group's holiday hit, "Merry Christmas, Happy Holidays."

They were also chucking some stuffed 'Trolls' dolls out to folks in the audience -- a tip of the hat to the boy band's recent reunion for a song in Justin Timberlake's flick, "Trolls Band Together."

The guys bumped into a few "RHONY" stars throughout the night ... including Countess Luann de Lesseps and newbie Erin Lichy and her husband Abraham, as well as Dorinda Medley -- who actually joined Lance and Joey onstage for "Rudolph the Red-Nosed Reindeer!"'

RHONJ stars Dolores Catania and Margaret Josephs, Million Dollar Listing New York's Ryan Serhant, and RHONY alum Carole Radziwill were also at the party.

No sign of Justin, JC Chasez, and Chris Kirkpatrick at the holiday shindig -- let's be honest, getting the whole group would've been a MUCH higher price tag.

Taylor Swift got in some pre-birthday partying Tuesday night ... painting the town red with Selena Gomez, Miles Teller and his wife, Keleigh Sperry.

The pop superstar turned 34 Wednesday -- but last evening when she was still 33, she and her small posse of famous friends went clubbing in the Big Apple.

TMZ obtained video and images, showing Taylor, Miles and Keleigh pulling up to Zero Bond in Manhattan and climbing out of their SUV.

Taylor -- clad in a fashionable tan trench coat and black boots - then sauntered inside the private club with the couple.

Keleigh also appeared stylish, wearing a navy jacket and short skirt. Miles, though, dressed down for the occasion, sporting jeans, a flannel shirt and a baseball cap.

Selena must have joined them inside because she was pictured leading Taylor -- hand in hand -- out of the hot spot with Miles and Keleigh in tow. By the way, Selena looked amazing in her tight black ensemble.

The foursome hit up a wine bar before calling it a night.

But there was one very special man who was MIA and that was ... you guessed it ... Travis Kelce!!! Taylor's hunky boyfriend/Kansas City Chiefs tight end had some quiet time to himself it seems.

All that glitters is gold ... well, that's according to Jennifer Lopez, who showed off her lavish Christmas decorations.

In posts shared to her IG Tuesday, J Lo took fans inside her $60M mega-mansion she shares with her husband, Ben Affleck .... showing off her opulent Christmas tree with an array of gold ornaments.

Jennifer was clearly in the festive spirit as she posed in front of the tree in a chic white shirt tucked into a long gold brocade skirt with glamorous pearl embellishments.

It's not just the interior that has Jennifer feeling Christmassy ... it's the outside of the abode, too ... giving off cozy "Home Alone" vibes with wraparound wreath porch decorations.

Jamie Spears has resurfaced without his right leg, 7 weeks after it was amputated.

Britney's dad was at a warehouse in Kentwood, getting out of his car, when the photos were shot. BTW, Britney owns the warehouse, but Jamie has what amounts to a lifetime lease where he has the right to use it to store his RV and other property.

Sources with direct knowledge tell TMZ ... Jamie's leg was amputated 4 inches above his knee.

TMZ broke the story, Jamie underwent the surgery after an infection spread to a point where doctors could not save the limb.

Our sources say Jamie has been fitted with a prosthetic leg, but until he's able to use it he'll get around with the help of a wheelchair and a walker.

As for his relationship with Britney, as we reported, hours after we broke the story about his amputation, Britney posted a photo of her dad on Instagram ... the first photo she's posted of him in ages.

Beyond that, our sources say Britney has not reached out to her dad, at least so far. We are told, however, she has recently talked about missing him.

Britney's relationship with her mom, Lynne, seems to be further along. Lynne has come back to L.A. for the second time this month to spend time with her daughter.

Taylor Swift's a year old and wiser ... ringing in her 34th birthday after looking utterly phenomenal in recent months with her best new accessory: Travis Kelce.

Needless to say, Taylor's style has come a long way from her early days sporting natural curls -- so let's take a swift trip down memory lane to check out some of her best sartorial statements from her changing eras.

She'd just released her album "Fearless" in 2008, but Taylor was giving wholesome back then ... as the teenager arrived at the Grammys in a strapless lilac evening gown, rocking natural curls and a deep side-part to boot.

Fast forward 4 years and the days of fedora hats and ballet flats reigned supreme ... with the singer sealing the deal with statement scarlet lipstick in light of her album, "Red."

Taylor was well and truly in her "Lover" era years later ... opting for girly colors, sequins, and glitter -- a fittingly flamboyant style in the run-up to her award-winning doc, "Miss Americana."

Her 17 years in the spotlight have been an historic run -- almost as if she comes back every time, because she never goes out of style. Happy 34th!!!

1:52 PM PT -- We should note ... the version Kanye West appears to have played in the Miami club featured other voices singing the chorus, so it's possible he can get away with it through a loophole.

Kanye West's new take on the Backstreet Boys' hit "Everybody" has been getting a ton of buzz, but there's one massive problem ... Ye never cleared it with the boy band.

Sources connected to BSB tell TMZ Kanye failed to get the collective OK from Nick, Kevin, Howie, Brian, A.J. and their team to use the 1997 classic.

In Kanye's version, you can hear the original song and chorus before Ty Dolla Sign takes over, singing the original lyrics from "Everybody."

Of course, not clearing the song creates an interesting challenge for Kanye considering he's supposed to release his album this week and the song is a listed track. Not to mention, he's played it out in public in Miami, promoted it on social media and pumped it through the speakers at his album listening event in Miami Monday night.

So by all counts ... it seemed like Kanye was planning to have it on his "Vultures" album.

We don't know if Kanye reached out and was denied usage of the track or whether he just never asked at all ... but either way, it ain't good for Ye.

Kanye's been the center of controversy for months, with his antisemitic remarks -- expressing his love for Hitler -- and dangerous social media rants. As we reported, Ye wore a black KKK-style hood Monday night at his public event.

Obviously, a lot of artists have distanced themselves from Kanye ... and it'll be interesting to see his chances of locking down clearance for additional tracks in the future.

Bhad Bhabie knows how to make money ... even finding a way to do so in announcing the sex of her soon-to-be-born kiddo.

On Tuesday, Bhabie showed off her baby bump in sporty soccer and biker-inspired clothes ... complete with pink exhaust fumes from the motorcycle to reveal the little one on the way is a girl!!! The photo shoot was a collab with Heaven by Marc Jacobs and designer Victor Barragan!!!

Bhabie tells WMD Marc Jacobs' team had no idea she was pregnant when they reached out for the campaign, but they still wanted to do it and molded the campaign around her bundle of joy.

Bhabie says she hopes to share the photos with her daughter soon, who she's expecting with her boyfriend Le Vaughn.

Beyoncé might have fresh beef stewing with a famous artist, who's strongly insinuating she -- or someone on her team -- ripped off his work for her "Renaissance" tour.

Here's the deal ... artist Hajime Sorayama just took aim at Beyoncé on social media, posting a few of her tour visuals alongside some of his artwork and insinuating she didn't ask permission to copy him.

In his post, Hajime says ... "Yo @beyonce You should have asked me 'officially' so that I could make much better work for you as like my man @theweeknd."

Thing is ... during Beyonce's wildly popular "Renaissance" tour, many people were under the belief her visuals were inspired by Hajime, with tons of folks assuming Hajime had given Queen B his permission to channel his art.

Hajime's post seems to indicate that's not the case -- however, it's unclear if he's angry and considering legal action ... or simply calling out the similarities between his art and her tour.

BTW, Hajime mentions The Weeknd because they collaborated in the past for some concert artwork, and, obviously, he feels he could've done the same for Beyoncé ... had she just asked.

Tiffany Haddish recently said she was ready for the next chapter of her life post-DUI, and seemed to signal what that looks like this weekend at Seth MacFarlane's holiday shindig.

The actress/comedian was on hand for SMF's annual Christmas party Saturday night at the Pacific Design Center in West Hollywood, where the man of the hour shared the stage with TH at one point to let her do her thing ... namely, an original cabaret-style song.

Check it out ... in video, obtained by TMZ, you can see Tiff belting out an old school sultry ditty that she said would make Sexyy Red and Lil Kim blush -- AKA, this one's naughty.

The crowd sure seemed to love it ... and why wouldn't they? Fact is, Tiffany absolutely killed it. Now, naturally, Seth himself sang some songs as well, and yes -- he rocked the house with his old Sinatra-style crooning too ... just like he always does.

It's interesting that Tiffany's keeping this cabaret thing going -- she rolled something else out just like this a couple weeks ago during her birthday celebration, and seems to be signaling she's all in on this type of performance. We know for a fact she's focusing on music lately.

Mariah Carey gave an early Christmas gift to the crowd at Madison Square Garden Saturday night ... bringing out Ariana Grande and Jennifer Hudson to perform "Oh Santa!" with her.

Mariah took the New York audience by surprise when she announced she had an "unexpected, yet amazing" treat. First, Mariah called Ariana and Jennifer "Christmas angels" and then asked them to come help her sing the Xmas tune.

As Ariana and Jennifer were ushered on stage, Mariah greeted them with excitement, saying, "You wouldn’t believe it, but here we have JHud with Ari!"

All three singers looked amazing in stylish outfits ... and Mariah confirmed it by giving the other women a once over and expressing her satisfaction in a word, "Gorgeous."

The trio then launched into the holiday song to the delight of the concertgoers, giving a knockout performance. But it was actually more of a reunion given that Mariah recorded a version of "Oh Santa!" with Ariana and Jennifer back in 2020.

A rare piece of Beatles' history is hitting the auction block ... a Grammy given to John Lennon is expected to bring in a fortune -- so, something tells us if you wanna come together with this trophy, ya better be a multimillionaire.

Gotta Have Rock and Roll, the music memorabilia-based auction house, has a unique Grammy Trustee award given to John as one of its many new lots, and this golden trophy is estimated to make up to $500,000 when it closes next week.

John, Ringo Starr, George Harrison, and Paul McCartney were each given one of the pieces of golden glory in 1972 ... and the one up for auction initially went to John.

The Trustee Award is given to those who made significant contributions to the field of recording during their careers as musicians.

Obviously, The Beatles were more than deserving, but according to the auction house John didn't see it that way -- when he was awarded the Grammy over 50 years ago, John told the president of the Grammys, "I'm not a Beatle anymore, you can keep it."

Since then, the golden gramophone has been in possession of one of John's close friends, who was also a former head of Apple Records, but now a lucky, wealthy fan can secure it for their Beatles collection.

Dennis Quaid's living out a rock 'n roll fantasy ... taking the stage with one of The Doors' last surviving members, Robby Krieger, for a surprise gig at the legendary Whisky a Go Go.

TMZ got this clip of the actor, and obvious Doors fan, stepping into Jim Morrison's shoes to front the band for their classic, "Riders on the Storm."

DQ showed off his pipes to the delight of the crowd inside the WeHo venue -- the event was presented by Sammy's Beach Bar Rum.

The night was dedicated to Mikeal Maglieri, the owner of the Whisky and Rainbow Bar & Grill, who passed away last month.

Dennis has always had a passion for music... playing gigs with his band, The Sharks -- also writing and performing the song "Closer to You" in 1987's flick, "The Big Easy."

Dennis, who's a devout Christian, drew on his faith earlier this year to release, "Fallen: A Gospel Record for Sinners"... saying it was inspired by his Baptist upbringing in Texas.