Party All The Time

It was an Irish megastar explosion after UFC 202 -- with Rory McIlroy and Niall Horan congratulating Conor McGregor at the post-fight party ... and TMZ Sports has the video.

It all went down at Intrigue Nightclub -- where the Irish golfer and the Irish boy-bander approached the Irish fighter to revel in their full Irish awesomeness.

Like Conor McGregor was gonna miss a victory party?

Here's video of The Notorious heading into Encore Beach Club at the Wynn on Sunday -- one day after beating Nate Diaz in one of the craziest UFC fights we've ever seen.

Conor didn't look too bruised up ... but he did enter the party with a pretty obvious limp.

McGregor insists he did NOT break his foot -- but banged up his shin during repeated strikes to Diaz during the UFC 202 fight.

Still, he didn't let the pain keep from partying with all the bikini-clad chicks at the club!

Congrats!

Guns N' Roses knows what matters most when you're playing in L.A. ain't your instruments -- it's how attractive your audience is, and they made sure to stock their show with hordes of hot models.

TMZ has learned the GNR team fired off an email to Photogenics -- an L.A.-based modeling agency -- inviting every female model on their roster to Friday's show at Dodger Stadium.

We're told the 50 or so models who accepted got hooked up with free seats in the first couple rows, backstage passes and a spot on the guest list at the Roosevelt Hotel after-party.

There's only one rule: no boyfriends or non-models allowed. The invite strictly forbids +1s.

Translation: Leave your ugly friends at home.

Ryan Lochte and the 3 other Team USA swimmers were rolling like true VIPs when they cruised into a Brazilian nightclub ... about 4 hours before their alleged robbery sparked an international incident.

Surveillance footage at Club France shows Lochte, James Feigen, Gunnar Bentz and Jack Conger breezed past the line of normies waiting at 1:47 AM to get inside.

At 5:47 AM they walked out of the club, interestingly, the Olympic heroes had zero chicks with them.

As we reported ... Lochte's camp denies Rio police claims that 2 female witnesses at the gas station were with the swimmers.

Madonna treated herself to the best hotel digs Havana has to offer for her 58th birthday bash, but still came nowhere close to breaking the bank ... not hers, anyway.

Sources with direct knowledge of Madge's 3-day trip tell us she bunked up in Hotel Saratoga's finest room -- the Suite Habana, which typically goes for $700 per night!

The suite features floor to ceiling windows, its own living room and a junior suite right next door ... possibly where Rocco or her pal Debi Mazar stayed during the celebration.

We're told the hotel had extra security from local police for Madonna's arrival -- just in case of a mob scene -- but everything went smoothly.

Jay Z and Beyonce also stayed at the Saratoga in 2013. Just to illustrate what a bargain rate these celebs are getting ... remember where they stay in Paris: $700 vs. $19,000??

Cuba -- where celebs get way more bang ... for their buck.

The real-life Catalina Wine Mixer is no longer just that legendary scene from "Step Brothers" -- it's now well on its way to becoming a full-blown festival ... thanks to a rocking lineup for 2016.

Last year's inaugural event was so successful promoters are making this year's a 3-day event, and we've learned the headliner's gonna be alt-rockers Kongos, best known for "Come With Me Now."

They're keeping up one important tradition -- The Dan Band will close the SoCal island mixer, slated for Sept. 23-25.

Attendees are encouraged to dress up like stars from the movie on day 1, and best dressed scores a free trip back to Catalina.

Madonna likely sparked a Cuban missile crisis in some guy's pants when she started bumping and grinding for her birthday celebration in Havana.

Madge was tearing it up in a bar called La Vitrola ... dancing on the bar by herself for several minutes until the chico joined her. The crowd, and her dance partner, were LOVING it.

16-year-old Rocco was also there for the party -- and joined Mom for some far more appropriate salsa dancing.

Gotta say ... Madonna almost makes 58 look fun, instead of just plain old.

Chief Keef is so anti-sobriety even his birthday cake is under the influence.

The rapper celebrated his 21st birthday with a cake straight out of a stoner's dream -- edible blunts and a Promethazine bottle on a 3-tier cake. Settle down, lean users ... it's just a fondant decoration.

Cake and Art in WeHo made the sweet piece ... complete with edible frosting paper to recreate Bill Da Butcher artwork -- and the "gold" chains might look tough, but they're just buttercream.

For the record: No actual codeine syrup was included in the recipe.

We're told Marc Gravelle needed just 4 hours to create the dope cake, which set Chief back a cool $1k.

Dan Bilzerian took a break from hunting for models and set his sights on helping America's vets.

The famed playboy is spending the entire month of August at a Wyoming ranch with vets who have been wounded in combat. There's lot of huntin', fishin' and shootin'.

We're told Dan's been working his ass off all year to set up the retreat benefiting Wishes For Warriors. The goal's simple -- spark passion back into the lives of vets.

Mission accomplished.

Kylie Jenner's birthday vacay continues to be the gift that keeps on giving ... to all of us.

KJ's still down in Turks and Caicos with Tyga and her squad. We're guessing she decided to celebrate that Tyga's a free man again by freeing something herself ... dat ass.

Kylie and Kendall Jenner paraded around Turks and Caicos in skimpy bikinis ... not that we're complaining.

Kylie celebrated her 19th birthday on the island and brought along her sister and some friends. Check out the pics ... oughta get you ready for thirsty Thursday.

Oh look ... there's Tyga!

There was an 'NSYNC reunion Monday night, and Justin Timberlake performed with the group -- sort of.

Justin, Joey Fatone, Lance Bass, and Chris Kirkpatrick sang "Happy Birthday" to JC, who turned 40.

Timberlake was surly as he left The Nice Guy, telling the paparazzi to "shut the f*** up." Joey, on the other hand, was friendly and hilarious ... and clearly somewhat intoxicated.

Omarion passed on the Legos and Tonka truck for his son's 2nd birthday ... opting for an art piece that set the singer back $18k.

The R&B star hired artist Madsteez to do a surreal painting of his 2-year-old son, Megaa ... a gift he presented at his kid's Kidchella-themed b-day party over the weekend in Granada Hills.

We're told Omarion reached out to Madsteez four days ago to make the 36" x 36" acrylic and spray paint piece -- which took 2 days to create.

As for the party ... the kids performed on a mini-stage and played in a bunch of bounce houses. There was also plenty of face painting.

Not too shabby.

He's smiling in public -- but there may be a lot more going on with Nick Young behind the scenes than meets the eye.

Swaggy P was leaving Penthouse in L.A. this weekend -- when we asked about the recent picture of him furniture shopping in his pajamas in the middle of the day.

"I'm going through something in life right now," Young explained.

The NBA star does have a lot going on right now -- Iggy dumped him, his ex is pregnant with his child, and there are rumors the Lakers are looking to ship him out of town.

If pajamas in the daytime make you feel better -- have at it.

Pro skater Nyjah Huston says the crazy all-night ragers that got him in trouble with the po-po WILL RETURN ... in about 2 years ... 'cause he's shut them down based on a judge's orders.

Nyjah was ordered to stop having his (epic-sounding) Orange County parties earlier this year ... after being slapped with a litany of criminal charges surrounding the nocturnal disturbances he was causing (click here for the details).

The judge was super specific ... telling Nyjah to shut it down between the hours of 8 PM and 8 AM, and when we got Nyjah out in L.A. recently he assured us ... he's obeying the long arm of the law.

"I'm on probation ... maybe in a couple years."

Future hosted the official Summer '16 After Party at ACES New York Thursday night ... and he got LIT in the VIP section.

Future was seen throwing around handfuls of cash, and we're told he bought 12 bottles of Ace of Spades champagne -- those are a grand each -- and spent $30k overall.

To make things even more tasty ... Pastry Chef Nerwan Khalife provided 6 dozen cupcakes for the VIP that were loaded with Hennessy and topped with pics of Future and Drake.

It was a packed house for Future, who was there for a couple hours until closing time. Young Thug also rolled through.

After-parties are the best parties.