Party All The Time

Michelle Obama looked like she was having a spankin' good time at Christina Aguilera's Las Vegas show ... especially when one of the dancers twerked on her!!!

The former First Lady attended Christina's The Xperience Wednesday night at Planet Hollywood's Zappos Theater, and got singled out by one of Aguilera's shirtless male dancers while she was in the middle of singing "Lady Marmalade."

Michelle didn't seem to mind -- she mimicked delivering some butt slaps before the guy moved on, and she continued to dance in her seat. In fact, she and her friends looked like they wanted more ... more ... mooooore.

We're told Obama and her group of gal pals were escorted out by security after the show ... seemingly pleased with Christina's performance.

As for why the ex-FLOTUS was in Vegas ... she spoke earlier in the day at the Ultimate Software Connections Conference, so apparently her ladies' night out was the pleasure after the business.

"What happens in Vegas, stays in Vegas" just doesn't apply to her.

How did the New York Rangers celebrate Mika Zibanejad's INSANE 5-goal game Thursday??

LOCKER ROOM SURPRISE PARTY, BABY!!!

Zibanejad could not miss in NY's game against the Washington Capitals ... netting 5 goals, including the OT winner -- and afterward, his teammates celebrated in pretty cool fashion.

They all hid in the locker room at Madison Square Garden ... and once Zibanejad walked in -- they surprised the hell out of him with a moshpit!!

Watch the clip ... the guys go pretty wild -- even dumping a whole water bottle on the star center's head!!

Zibanejad has been red hot for the Rangers this season ... scoring 38 goals and tallying 33 assists in 54 games -- but his night against the Caps was ALL-TIME great.

Five-or-more goals in one game has only been done 62 times in the sport's history ... and only 46 players have EVER done it.

By the way, if you're wondering, Wayne Gretzky scored 5 or more goals FOUR TIMES in his career!!!

Madison Beer ruffled her own feathers on her 21st birthday ... and it was one helluva view.

The singer celebrated her big 2-1 Thursday night in WeHo in front of a star-studded crowd at Delilah nightclub. All eyes were on Madison ... she slayed in a baby blue, bejeweled, carnival-themed costume.

Madison had some stiff competition though in the attention department ... as in the birthday cake.

Baby blue seemed to be the color of the night as Hailey Bieber went chic business with high-knee leather boots. Hailey's hubby had a big hand in practically launching Madison's music career. Remember, it was Justin who 8 years ago tweeted a YouTube video showing then 13-year-old Madison belting out Etta James' "At Last."

The rest is history.

Tough scene for a super-rich guy sitting courtside in Boston on Tuesday ... Kemba Walker drilled him in the chest with an errant pass -- SPILLING HIS BEER EVERYWHERE!!

It all started when the Celtics superstar was trying to make a sweet play in the lane against the Brooklyn Nets ... when he fired a bullet to his teammate for an easy layup.

The problem? Romeo Langford couldn't handle the hot potato ... and the ball went crashing right into some dude's beer!

Check out the aftermath of the cold one's explosion ... the suds went all over the man's suit -- and some shrapnel even got on the guy next to him!!

To their credit ... both guys took the spillage in stride, smiling and laughing about it.

Hopefully someone replaced the drink ... 'cause that stuff ain't cheap in the NBA.

As for the game, the Celts ended up losing 129 to 120.

Luka Doncic might have lost his Mavericks game on his 21st birthday ... but he DEFINITELY won the after-party!!!

TMZ Sports has learned the NBA superstar got after it Friday night for his bday despite losing to the Heat ... hitting up Miami hot spots with his Mavs teammates and other celebs.

We're told Doncic and the guys got dinner at Papi Steak in Miami Beach before ultimately spending the night at Club LIV.

And, you can see in photos we obtained of the festivities ... Doncic was having a blast -- even at one point getting some partying in with Bad Bunny!!

We're told Mavs owner Mark Cuban threw an especially big bash for his team's best player ... taking over LIV's stage area and popping champagne all night.

As for how the hangover went ... the Mavs were off Saturday -- but Luka still took Dallas' game off against the Timberwolves on Sunday.

The team says it was because of a previous thumb injury ... but we're not so sure we're buying that.

Justin Bieber turned 26 this weekend -- and as much as you might think the guy had every reason to cut loose ... he kinda did the exact opposite when it was time to make a wish.

The Biebs' party went down Saturday night at Delilah in L.A. -- this after a reported 1-on-1 romantic dinner with the missus, Hailey -- where a bunch of their pals came out to help him celebrate the big 2-6. It looked like a sweet shindig -- there was a live band, drinks being passed around and, of course, lots of pastry sweets ... including candle-lit cupcakes.

He had a cake to himself though, and as everybody sang him "Happy Birthday," Justin looked a little ... dare we say, somber? Yes, some of that -- but mostly content and chillaxed.

He had Hailey right in front of him, naturally, and it appears he kept his eyes mostly on her the whole time. Clearly, the married couple is head over heels to this day. He was later seen cradling her from behind, and they snuck in some smooches where they could.

Even with a ton of cameras on them, they didn't seem to care. Justin and Hailey just couldn't keep their hands off each other as they hugged, kissed, swayed and canoodled. Young love at its finest, right?

Now, just to be clear ... it wasn't all lovey-dovey and heart eyes all night -- JB DID get down and bust a move at different points in the party. He also got on the mic for a bit, but for the most part ... Bieber seemed to be acting pretty freaking responsible and playing the good hubby all night.

Tyson Fury has finally returned home to England ... and turned the airport into a nightclub!!!

There were HUNDREDS of fans lined up to greet the 31-year-old heavyweight champ at Manchester Airport on Tuesday morning ... including a DJ who pumped music to the pumped-up crowd.

Fury LOVED IT -- and played along to the crowd as he continued to celebrate his victory over Deontay Wilder.

Tyson had a few marks on his face -- but overall, he looked pretty good ... much better than his last fight anyway (remember, they had to sew his face shut after that gnarly gash).

"Thank you, everybody, for coming to support me," Fury told the crowd ... "God bless!"

Meanwhile, Deontay Wilder has said he wants a 3rd crack at Fury and will exercise the rematch clause in his contract.

No word on when that will take place -- but whenever it happens, ya gotta think Wilder will cool it on the ring walkout costume next time around ... maybe get carried to the stage like Tyson!

Dwyane Wade followed up his jersey retirement ceremony with a late night full of booze, tunes and sweaty nightclub goers -- the only way to go out in Miami.

D-Wade hit up the city's hottest spot for raging after the Miami Heat put the man's No. 3 jersey up in the rafters of AmericanAirlines Arena forever ... honoring their hometown hero and making it so no other player can ever rock it again. It's official ... he's a pantheon great.

Fast-forward a few hours ... and D found himself at E11EVEN, where we're told he showed up with about 30 people around 1:30 AM with enough energy to party his face off -- ordering rounds of Armand de Brignac,  Don Julio 1942 and E11EVEN Vodka. The guy even got on the mic at one point and performed a bit for the packed house of fans and loved ones.

No, he wasn't putting up shots for everyone like he has in the past -- dude actually rapped a verse. ICYMI, Dwyane is featured on Rick Ross' new song, "Season Ticket Holders," and kinda drops some heat in the process. As soon as the DJ put it on, DW didn't hesitate.

Unclear if Gabby was with him here at the club, but we know she was definitely at the game earlier. It's possible she let her hubby have a boys night out ... 'cause this is Dwyane cuttin' loose like we don't normally see.

Lil Nas X trumped Mickey Mouse Saturday, by crashing a wedding reception at Disney World, and some of the guests fully melted down!

The "Old Town Road" icon apparently schemed with the bride, because the 2 of them walked into the reception hall and guests as his song filled the room ... and guests were shocked.

You hear one woman scream, "What the f*** is happening right now!?!!"

The 20-year-old rapper hit the dance floor and no doubt about it ... it made the wedding a night to remember.

Floyd Mayweather celebrated his 43rd Birthday in grand fashion Friday night ... with tons of celebs to help him out.

Floyd and co. shut down the Sunset Eden nightclub in Hollywood where hundreds of folks lit up the room, including Snoop Dogg, French Montana, Lil' Kim, Reggie Bush, Tiffany Haddish and Quavo.

There were sexy ladies riding "Air Mayweather" planes flying up and down with smoke and fire. Check out the woman on the shoulders of a man surrounded by golden flares.

There were plenty of 100 bills with Floyd's face on them.

Paris Hilton took over the dance floor at her birthday party, as she was really feeling the vibes of a hit Britney Spears track ... this is "sliving" at 39.

The famous heiress had a huge shindig Thursday night to celebrate the final year of her 30s, which she entered earlier this week. The bash was held at "Slivington Manor" in Beverly Hills -- if ya don't know, "sliving" is a term coined by Paris combining "slaying" and "living."

Sounds like a lot to live up to, but Paris took the reins and didn't hold back ... even if she was flying solo as she moved and grooved -- and even twerked -- to a bunch of hit tracks.

Along with "... Baby One More Time," her dance playlist included 50 Cent's "In Da Club" and Miley Cyrus' "Party In the U.S.A." ... like all good parties should.

As you can see, Hilton's party decor featured giant balloons, flowers, lots of pink stuff and #sliving signage ... along with a tie-dye convertible BMW. There were also treats and drinks galore and a star-studded guest list.

Among the partygoers ... French Montana, Machine Gun Kelly, Rita Ora, Farrah Aldjufrie, Sommer Ray, Dorothy Wang and Stephen Dorff. Two Kardashian sisters -- Kim and Kourtney -- also showed up, albeit briefly. Of course, her sister Nicky and mom Kathy were there too.

John Travolta sharing a stage with Pitbull at a Latin music awards show definitely sounds like a dream, but pinch yourself, 'cause it really happened ... and it was kinda glorious to see.

The rapper emceed Premio Lo Nuestro 2020 Thursday night at AmericanAirlines Arena in Miami but playing host wasn't all he was up to that night. He also performed a medley of his greatest hits ... and among his performances included "3 to Tango."

Travolta, of course, stars in the "3 to Tango" music video ... which only shows the back of John's head most of the time until the big reveal at the end. So, when Travolta joined Pitbull on stage, the crowd naturally ate it up.

It wasn't quite "Saturday Night Fever" but Travolta still danced his ass off, and even stuck around and grabbed a mic for Pitbull's "Get Ready" performance.

Pitbull -- winner of 7 'PLN' awards -- also brought out Chesca and Lil Jon to perform "Cinco de Mayo."

Ryan Garcia was still TURNT ALL THE WAY UP at his victory party following his KO of Francisco Fonseca ... telling the crowd, "How about that f**king left hook?!"

Just hours after the 21-year-old boxing superstar put together another highlight-reel performance, Garcia and his crew celebrated at a house party in Orange County.

Garcia -- who barely broke a sweat -- grabbed the mic and thanked everybody in the crowd for supporting him in his meteoric rise to boxing stardom ... saying, "This is a team effort."

He also talked about the crazy work ethic that helped him become the WBC silver lightweight champ -- saying, he busts his ass "every f**king day!"

Garcia is 20-0 with 17 knockouts ... and his last 2 fights have lasted a grand total of 2 minutes and 58 seconds!

So, what's next for Garcia? His promoter, Oscar De La Hoya, says he's already reserved the Staples Center for a fight with former world champion Jorge Linares.

After that ... Garcia has said he wants everyone from Gervonta "Tank" Davis to Devin Haney.

Afroman took a giant misstep while performing one of his hit tracks, and even though he went down hard ... he found a way to save his beloved pimp cup!!!

The rapper was in the middle of his famous song "Crazy Rap" -- AKA "Colt 45 and 2 Zig Zags" -- Saturday night at Montbleu Resort in Lake Tahoe when he took the spill off the stage. He popped right back up with a little assistance though ... and kept the flow going.

As you can see, he was holding the mic in his left hand and his pimp cup in his right before he fell ... and he says he saved the cup from any harm.

Afroman's producer, Ditch, tells TMZ ... the rapper's glass is no cheap knockoff -- it comes from Debbie the Glass Lady, creator of the Crunk Cup, and goes for about $3,000.

Ditch also says Afroman was not injured in the incident, but we pretty much already knew that ... because he was dancing it up with a mystery girl after his show, pimp cup still in hand.

Baby, that's all he needs.

Remember that "Friends" episode? The one where Jennifer Aniston turns 51 and parties with some of her closest friends?? Well, allow us to jog your memory.

The actress celebrated the big 5-1 Tuesday night at the Sunset Tower Hotel in West Hollywood, where she made a sneaky quick entrance ... but her pals were slow to trickle out. Just a small handful of those in attendance ... her BFF and former "Friends" costar, Courteney Cox, jewelry designer Jennifer Meyer, Kevin Nealon and Chace Crawford.

We're sure there were way more guests that might've left through other exits ... Jen's pretty popular in Hollywood, if you hadn't heard. Has been for years now, in fact.

Speaking of the bday girl ... an interview she did with Interview Magazine was released Wednesday, featuring her on the cover looking as gorgeous as ever. There's also a photo spread inside -- which is sure to remind you why you watched "Friends" all those years ago.

Just kidding ... it was a good show. But, truthfully, JA made it all that much better. And hey,  now she's on another series, "The Morning Show," that shows off her chops in a drama.

"Parasite" director Bong Joon-ho is a man of his word -- or so it appears after we caught the Oscars' biggest winner partying deep into the night.

The entire "Parasite" cast was still feeling it right around 2 AM Monday when we saw them rolling out of SoHo House in West Hollywood. Joon-ho's masterpiece earned 4 Academy Awards, out of 6 nominations, Sunday night.

After accepting the Best Director trophy, he vowed to "drink until the morning" as he walked off stage ... thinking it was time to start the celebration. Of course, he wasn't done yet ... since he was back a few minutes later to win Best Picture.

Still, based on their mood at closing time, we're guessing Joon-ho and co. kept that drinking promise. Although, we can't say for sure -- admittedly, our camera guy should've utilized their translator more.

However, the film's stars and the director were posing with random strangers, and their Oscars. Kang-ho Song -- the Kim family dad, if you've seen it (and you should) -- looked particularly festive as he happily took pics with fans.

They all loaded into 2 Sprinter vans with a tight grip on their Oscars. Sure, they could've gone back to their hotel rooms after this ... but watch the clip. We're betting they emptied their mini-bars.

To the winner go the spoils!