Hot Vegas

There's a couple of banging bandits on the loose in Vegas -- after they got busted celebrating "Fifty Shades of Grey" all over a Sin City museum ... which may seem appropriate, but it's still illegal.

TMZ obtained surveillance video of their bare-assed exploits around the Erotic Heritage Museum -- which was featuring an homage to kink on Valentine's Day ... and after-hours the couple went on a room-by-room sex spree.

First, they found a hiding spot and waited for the museum staff to clear out ... and the house lights to go down. Then the banging began in earnest. The couple didn't hold back as they moved around -- but they didn't realize security was watching.

Dr. Victoria, who heads up the museum, tells us security alerted staff members who returned to bust the exhibitionists. You gotta see their half-naked getaway once they realized the jig was up.

The Rob Gronkowski party trains rolls on ... there were hot chicks (a lot of them), bottles of champagne, a Lombardi Trophy shaped cake ... and TMZ Sports has the EPIC party video.

The Patriots superstar hit up Surrender Nightclub at the Encore hotel in Vegas last night ... and did what Gronk does -- got super turnt up and smashed stuff!!!

Sources at the club tell us Gronk arrived around 1AM ... pounded champagne straight from the bottle, danced on stage, and showered the crowded with bubbly.

Best part ... Gronk SPIKING the football cake ... on his brothers head!

Check out the video.

"Pawn Stars" co-star Austin "Chumlee" Russell will DJ your club ... but only if you provide him with Girl Scout cookies and hot chicks.

The aspiring DJ is ready to scratch out his first gig Saturday at Ghostbar Dayclub's season finale at the Palms in Vegas ... his contract rider demands more pampering than Eddie Van Halen. Por ejemplo:

-- 1 pair of Hawaiian Nike Dunk SB's

-- Dinner at the N9NE Steakhouse for his crew

-- A basketball suite for a pick-up game after the show

-- Beautiful waitresses to escort him to the stage

-- Girl Scout cookies (Thin Mints and Peanut Butter Patties)

-- 2 Nerf basketball hoops and 5 Nerf guns

Rob Gronkowski ain't the only guy on the Patriots who loves to party -- Super Bowl hero Malcolm Butler hit the club scene hard in Vegas last night ... and TMZ Sports has the pics!

Butler was the guest of honor at Chateau nightclub in the Paris Las Vegas -- where the 24-year-old got his own booth, his own custom champagne ... and his own personal cheerleaders.

Multiple sources tell us Butler was super nice to everyone -- taking pics with fans and dancing all night long.

It's been a pretty good month for Butler -- as we previously reported, Chevy decided to give him a FREE TRUCK for making that game-saving interception in the Super Bowl.

Porn star Christy Mack is taking her talents to Vegas for the AVN Awards -- but after recovering from a brutal domestic violence attack ... she's doing it for a charitable cause.

TMZ has learned Mack will be doing a meet and greet at OG Las Vegas on Friday night -- and a portion of the door proceeds will be donated to Safe Nest -- a domestic violence org.

Christy's appearance kicks off AVN weekend in Vegas ... and we're told there will be VIP gift bags with limited edition Christy Mack merchandise on sale to fans. Some of that revenue will also go to Safe Nest.

TMZ broke the story ... Mack was allegedly pummeled by her ex-boyfriend War Machine back in August ... leaving her with broken bones and a ruptured liver.

War Machine is still behind bars facing 32 charges ... including attempted murder.

Now we know how he can afford that Million Dollar Piano … TMZ has learned Elton John has bumped Britney Spears in her Vegas run by hauling in more than $500K a show.

Elton’s definitely in the driver's seat. According to his deal he gets 88% of the door for every show. He also has a sign off on ticket prices, which range from $55 to $1,000 for VIP seats.

Captain Fantastic is putting Britney's $475K take a show to shame, because he's doing it with fewer seats -- The Colosseum only seats 4,296 while Britney's show at Planet Hollywood has 4,600.

The show began Friday and runs through April 14.

We reached out to Elton, but he's too rich to comment.

Dance duo Les Twins -- featured on Beyonce/Jay Z's recent tour -- were embroiled in an intense dance battle Friday ... it got so heated one of them got punched in the face!

The twins were competing at Revolution Lounge in Las Vegas ... and the person who shot the video says Laurent and Larry Bourgeios were trash talking with the opposing dancers.

Laurent eventually tries to make peace, but when he extends his hand he's swiftly gets punched in the face.

We're told the man who threw punches was booted ... and the competition ended with no winner.

Calls to the Mirage and Les Twins went unreturned.

Check out the dancers in action during the "On the Run" tour -- pretty impressive.

Mariah Carey is setting up shop at Caesars Palace, and you gotta figure she's pulling in at least as much dough as Britney Spears to do it -- which means an epic shopping spree is in the making.

Much like winter on "Game of Thrones" ... Mimi is coming, Las Vegas! You've been warned.

Robert De Niro has beef with Caesars Palace ... actually he has Kobe beef, because his swanky Nobu restaurant has been stiffed by the house.

De Niro is the co-founder of the high-end restaurant chain and his company, Nobu Hospitality, is listed as a creditor in the bankruptcy case the hotel just filed. According to legal docs -- obtained by TMZ -- Caesars owes Nobu nearly $460K.

And the actor's not alone. According to the docs, Caesars owes Gordon Ramsay $307K. Ramsay also has a restaurant -- Gordon Ramsay Pub & Grill -- in the hotel complex.

Move over Britney Spears, it's Mariah Carey, Bitch! The singer has officially signed on as the newest resident diva in Las Vegas ... TMZ has learned.

Caesars Palace got their wish ... we're told that Mariah snuck into Vegas last week to seal the deal. Need proof? We've got video of Carey and her entourage leaving the Palace Cheesecake Factory, escorted by security.

The superstar plans to light up the Colosseum in place of Celine Dion -- who's taking a break -- the glittery one will take the reigns until she returns late this year or early 2016.

We're told the deal is super secret but ENORMOUS. To put it in perspective Britney is raking in $475K a show ... it's unfathomable Mariah accepted less. Caesars is ready to announce concert dates any day now.

Looks like she can have her cheesecake AND eat it too.

Get ready for what could be the most epic girl's night out ever ... because Mariah Carey wants to party with Britney Spears.

Paps went bats**t crazy for Mimi as she left Craig's in West Hollywood ... just hours after we reported Mariah's deal to set up a residency at Caesars in Las Vegas was official.

While one might think Sin City is not big enough for both Mariah and Britney, Miss Carey told our photog she's totally down for a night on the town with Brit.

The Vegas gay bars will be hopping that night.

R&B singer The Weeknd was arrested Saturday in Las Vegas ... after he was accused of punching a cop.

Law enforcement sources tell us a fight allegedly involving Weeknd started inside the Cromwell Hotel around 4:20 AM ... and when they arrived, the fight was still raging.

We're told cops attempted to break up the fight, and one of them pulled the singer into an elevator during the scuffle. That's when Weeknd allegedly punched him in the head.

The singer -- best known for his duet "Love Me Harder" with Ariana Grande -- was instantly hauled off to jail for battery of a protected person.

After he was bailed out ... Weeknd posted a pic of himself boarding a private jet with the caption, "escaped from Las Vegas."

Celine Dion is NOT coming back to Vegas ... at least till the end of this year ... TMZ has learned.

The plan was ... Celine would return to Caesars Palace in March after taking a hiatus last August to care for her ailing husband.

Our Caesars sources say Celine has informed the venue the earliest she will return is most likely at the end of the year. She will not give a date.

We're told Celine continues to care for Rene Angelil, her husband of 20 years. He's battling throat cancer, but we are told he is getting better.

Caesars continues to fill The Colosseum with other acts ... including Rod Stewart, Elton John, Shania Twain, Reba McEntire and Brooks & Dunn.

Jennifer Lopez passed the "Vegas Residency Test" with flying colors on New Year's Eve, and in the process scored more than $400K.

Our Vegas sources tell us ... Lopez raked in $410,000 for her NYE performance at Caesars Palace, plus she gets back end. Even though the show was sold out, the venue only netted slightly more than $600K.

It's still good, and our sources say the point of the gig was to see if Lopez was a sufficient draw for a full-on residency.

To put Lopez's payday in context, Britney makes around $475K a show with her new contract.

We're told Caesars was pleased.

GET IT SIR CHUCK!!!

We just got amazing video of Charles Barkley gettin' down -- droppin' it low -- at a bar in Vegas this weekend. Did we mention it's amazing?

Barkley was at the Mandalay Bay around 1AM Sunday morning -- busting out the moves to the beat of Kendrick Lamar's new jam, "i."

Clearly, Sir Chuck was feelin' it ... until the DJ decided to put on CeeLo's "F**k You" ... and that's when Barkley decided the dance party was over.

Random thing 1: Sofia Vergara, Joe Manganiello and Arnold Schwarzenegger all hung out together on New Year's Eve. Random thing 2: They went took in a Britney Spears performance!

We're on the fence about which thing is more random -- but yeah, the 3 celebs and Arnold's gf Heather Milligan ... hit up Planet Hollywood in Las Vegas for a steak dinner, and Britney's "Piece of Me" show.

Sofia still managed to keep that engagement ring (rumored to be 10 carats) under wraps -- just like she did in Hawaii right after Joe gave it to her.