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Neon Carnival hit a major milestone this weekend ... and yeah, they still know how to throw a party!

The iconic Coachella after-hours bash celebrated its 15th anniversary in the desert, bringing out a stacked crowd and turning the invite-only event into its usual late-night celeb playground.

Ty Dolla $ign, Tyga, YG, Chris Brown and Mario were all in the mix, with Ryan Garcia right there too ... the group even shared a prime booth near the stage as the night rolled on. Mario had a standout moment, belting out "Let Me Love You" a cappella, while Tyga and YG popped up with surprise performances that kept the energy high.

Offset is back on stage just days after being shot and he's doing it from a wheelchair ... at least most of the time.

The rapper made his first performance Saturday since the shooting, rolling out in a wheelchair for a club appearance and proving he’s not slowing down despite the injury.

But he wasn't staying seated the whole time ... Offset actually got up out of the wheelchair at one point to perform, pushing through the pain as the crowd went wild.

Jennifer Lopez just checked a major box off her list and did it in full bombshell mode.

J.Lo made her Coachella debut Saturday night, popping up as a surprise guest during David Guetta's set. The crowd lost it when Guetta teased he had "invited a friend" and out came Lopez in a skintight, plunging bodysuit that showed off her insanely toned figure.

No easing into it either ... she hit the stage ready to go, tossing her sunglasses into the crowd and ripping off her feathered jacket like it was nothing.

Coachella Night 2 delivered a little something for everyone with Justin Bieber, Nine Inch Noize and Jack White each bringing their own distinct energy to the desert.

Bieber took the headlining stage, but skipped the typical pop spectacle. Instead, he leaned into nostalgia ... sitting behind a laptop for much of the set while singing along to YouTube videos of his biggest hits like "Baby" and "Never Say Never," and even pulling up clips from his early days online.

The crowd was locked in. Bieber still powered through a lengthy set and brought out guests including The Kid Laroi, Tems, Wizkid and Dijon, marking his biggest live show in four years.

Katy Perry delivered one of Coachella's most meme-worthy moments, and it had nothing to do with being on stage.

The pop star was caught on camera during Justin Bieber's headlining set Saturday night, joking, "Thank God he has Premium," as she watched his YouTube-driven performance from the crowd ... a clear nod to skipping ads while he played clips of his own videos.

Perry posted the moment to Instagram as part of a carousel from her weekend in the SoCal desert, leaning into the joke as Bieber's unconventional set quickly got people talking online.

Justin Bieber's looks over the years are UN-BELIEBER-BLE!

Here is a 20-year-old version of the Canadian native presenting in his undies at the Fashion Rocks 2014 event in New York City (left). This was 4 years after he dropped his big bop "Baby."

And more than a decade later, this Zzzaddy is still rockin' undergarments on stage, seen here (right). JB totally rocked out at Coachella this year and owned the spotlight, but we gotta know: Good Genes or Good Docs?!

Lookin' for more Bieber photos? Check out the gallery above showcasing his Coachella performances through the years!

Coachella Day 1 got the whole crowd rockin' ... while a few celebs flaunted their rock hard abs!

It's hot out in the California desert, and several stars decided to strip down ... like Teyana Taylor who wore a tiny yellow crop top with a pair of low rise leather pants.

Olandria was busting out of a brown bra-top ... which matched her barely-there miniskirt. Meanwhile, Katseye's Daniela Avanzini wore a sparkling maroon bra that certainly drew some eyes.

Justin Bieber's a main draw for fans at Coachella this year ... and Chanel West Coast and Lexy Panterra really want people to go to the bathroom at a port-a-potty before the show -- not on the ground during it!

We caught up with the stars at the Grow & Glow festival by Victoria Jancke near the main festival grounds Friday ... and we had to know what they were most excited to see at this year's event.

Chanel immediately says the Biebs ... remembering him from when he showed up at Rob Dyrdek's Fantasy Factory more than a decade ago -- and complimenting him on the direction his career's gone.

Liam Payne's former girlfriend Kate Cassidy is heating up the California desert ... spilling out of her outfit on Coachella Day 1.

Check out her sizzling Instagram post -- she's all done up, wearing a leather and denim miniskirt-and-tank set that barely holds in her voluptuous chest.

She doesn't seem to mind the tight squeeze ... playfully posing for the camera on the infamous Coachella Festival grounds.

2:58 PM PT -- Sabrina Carpenter clearly heard the noise regarding the now-viral moment ... 'cause she hopped online to clear the air and issue an apology.

The singer just said on X she couldn't see or clearly hear the person she was referring to in the crowd, adding the way she reacted was "not ill intended."

Sabrina added she's now aware of what a Zaghrouta is ... capping it off with, "I welcome all cheers and yodels from here on out."

Sabrina Carpenter's not a fan of yodeling ... or what she thought was yodeling -- expressing an opinion that's getting her into a bit of trouble online.

The pop star brought down the house at Coachella Friday ... and, one excited fan showed their appreciation with a high-pitched trill in between songs that rubbed Carpenter the wrong way.

Coachella 2026 has officially kicked off ... and night 1 came and went with a blur of some of the industry's biggest names.

As you know, Sabrina Carpenter made her headlining debut on the main stage and used all the tricks up her sleeve -- opening her set with a cinematic short film during which a police officer played by Sam Elliott warned her to stay away from California.

Obviously, she didn't listen ... and gave a stellar performance, including her biggest hits and cameos by Samuel L. Jackson, Will Ferrell, and Susan Sarandon. But the electricity didn't end with Sabrina ...

Sabrina Carpenter went full-on Hollywood at Coachella Friday night, trotting out some of the most famous faces in film and starring in her own short movie, while also cranking out her biggest hits.

The pop star hit the main stage during night one of the first of 2 weekends at Coachella -- and she drove the packed crowd absolutely nuts with her Hollywood-themed 20-song performance.

Speaking of driving, Sabrina kicked things off by starring in a pre-recorded short that featured Sam Elliott as a cop who pulls her over on a desolate desert road. Sabrina asks if she had broken any laws, and Sam says she hadn't but stopped her anyway because he was "curious."

Lizzo ain't goin to Coachella ... she's ready for "Hoechella" -- in her own words!

The singer announced she's "Hoechella"-ready on Friday as she boarded a private jet to head to the California desert for the annual music festival ... wearing some tiny panties that bared her bum!

Check out her Instagram post -- she's confidently walking up the stairs wearing assless legging chaps that put her mesh undies front and center. As you can see, the underwear left little to the imagination, only using a small piece of solid fabric to cover the top of her crack.

Coachella in the desert gets hot ... so yeah, it’d be criminal if there weren’t pools to cool things down -- luckily, there are plenty!

Check out these sizzling snaps ... CJ Perry and Olivia O'Brien are serving itty-bitty bikini vibes while beating the heat amid the festival chaos.

The gallery doesn’t stop there ... Jayda Cheaves and Emma Chamberlain bring the heat ... while the guys, like Brooklyn Beckham and Zayn Malik, keep things cool poolside.

Delilah Belle let 'em know she arrived at Coachella looking fierce, fine, and ready to shine ... but we've made some shady switches to these two images ... can you track them down?!

Delilah -- daughter of Harry Hamlin and Lisa Rinna -- rocked some low-rise pants and a "No to anxiety" cutoff crop top -- posing in a party bus

EPIC!

Grab your lassos, rock your coolest cowboy hat, and throw on your boots -- Hollywood's 'bout to whip y'all into shape serving all the fashion at Coachella!

Sexy stars like Alix Earle, Valentine Ferrer and Chloe Veitch saddled up in desert-ready looks ...

And Olivia Culpo and Paris Hilton booted up and owned the Coachella Valley ... That's Hot!!!