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JoJo Siwa is ready to face the world again after a controversial fall ... stepping out in Los Angeles for the first time in over a month for a few caffeine-fueled errands.

Check it out ... the "Dance Moms" alum is back to business after upsetting some Beyoncé fans who thought she mocked the singer at the Industry Dance Awards in October. Seemingly shaking off the backlash, JoJo hits up a local coffee shop in L.A., where she gets a little work done on her computer -- even making time for a sweet selfie with a fan.

JoJo seems pretty energized to get back out in the public eye ... and the massive coffee in her hand may have something to do with the pep in her step.

Katy Perry's enjoying the local cuisine in Mexico ... enjoying a taco fiesta with a big group of friends, gulping down the delicious dish.

The singer-songwriter was filmed in Mexico City this week ... grabbing a bite to eat in a regular restaurant -- and she's not in a VIP section, she's sitting dead center.

Check it out ... Katy's sitting with pals at a big table, and she takes a big bite out of a taco, covering her mouth with her hand as she chews.

Ariana Grande was in awe the first time she saw the Munchkins in the upcoming "Wicked" movie ... so much so that she stopped to take photos of them in costume.

Ricardo Ludgero Souza, who plays a Munchkin in "Wicked," tells TMZ ... Ariana went complete fan-girl before her first scene with the Munchkins, asking the actors for pics and chatting with them on set before cameras started rolling.

Ariana's reaction came as a complete surprise to the actors playing the Munchkins, Ricardo says ... she's by far the biggest celebrity on set, but geeked out over the littlest people in Oz.

Celine Dion and Jennifer Lopez are both getting back on the performing horse ... taking the stage at a famous fashion show in Saudi Arabia Wednesday night.

The singers performed during this year's Elie Saab fashion show in Riyadh ... providing the entertainment for the 45th anniversary gala -- and, the 2 stars didn't disappoint.

First, Celine -- who made her big return to performing at the Opening Ceremony of the 2024 Olympics in Paris -- hopped onstage in a gorgeous golden gown, belting out hits like "The Power of Love," "I'm Alive" and other classic tracks.

Jason Kelce's donning his Christmas Crown ... 'cause his song with Stevie Nicks is currently charting higher than Mariah Carey's "All I Want For Christmas Is You" -- making him the official Queen of Christmas!

The former Philadelphia Eagles center talked about taking on Mariah during an episode of "The New Heights" podcast ... after Travis rattled off the accomplishment, saying somehow, Jason and The Philly Specials are beating Mariah at her own game.

"Maybe This Christmas" -- a duet by Kelce and Fleetwood Mac songstress Nicks -- has passed 'All I Want' as the No. 1 Christmas song of the season ... and, Jason says taking his rightful place as The Queen of Christmas feels so good.

Ariana Grande has left fans clamoring for answers after calling out one inaccurate "Wicked" lyric ... with some debating the pop star's stance on the song.

Here's what went down ... Wednesday, the "Wicked" movie uploaded to Instagram a snippet of Ariana's rendition of "Popular" in the musical movie ... slapping the lyrics over the first look of the scene.

However, the upload seemingly had one glaring error .... this according to Glinda, herself. In the comments on the Instagram post, Ariana chimed in and revealed the word "poise" in the lyric video should actually be "ploys."

Liam Payne's death is putting a spotlight on the unseen struggles teen singers face when they put trust into stardom, even when it seems like they're thriving ... according to Jeff Timmons from 98 Degrees.

Jeff is just one of several boy banders opening up about the rollercoaster ride his group, Backstreet Boys, *NSYNC, New Edition, New Kids on the Block and many others endured for decades. They're all featured in the new Paramount+ documentary, "Larger Than Life: Reign of the Boybands."

On Tuesday's "TMZ Live," Jeff told us the sudden fame they all encountered -- mostly in the early 2000s -- was absolutely a blessing, but it was also impossible to prepare for everything that was thrown at them.

Machine Gun Kelly showed up for a surprise set with Mod Sun at a venue in Los Angeles last night, after a big family announcement earlier in the day.

Rocker Mod Sun was playing the last show of his current tour at The Wiltern Monday night, when he was joined onstage by MGK.

"Straight from the plane to the Mod Sun show, my friend," MGK said, addressing his pal onstage after he joined Mod for a song. He congratulated MS and the band for an "amazing" tour, and the crowd for "keeping the scene alive."

Beyoncé will have Ivy League students saying her name next semester ... the chart topper's history-making career will be studied at Yale University in 2025.

Daphne Brooks, a professor of African American Studies, American Studies, Women’s, Gender, and Music at the famed university, will be teaching a class inspired by the evolution of Beyoncé's career ... including her sound, fashion, and use of visual media.

The class, titled "Beyoncé Makes History: Black Radical Tradition History, Culture, Theory & Politics through Music," will be offered next semester ... and will trace "the relationship between Beyoncé’s artistic genius and Black intellectual practice."

Taylor Swift gave security at Arrowhead Stadium a crash course in good manners on Sunday, telling one guard to speak a little nicer to the paparazzi.

The pop superstar arrived at the stadium in Kansas City to watch her boyfriend, Travis Kelce, and his K.C. Chiefs battle the Denver Broncos on the field — but Taylor had her own itty-bitty skirmish behind the scenes before the kickoff.

Check out the video ... Taylor was being chauffeured in a golf cart through the arena with her mom and dad -- Andrea and Scott.

Diddy's family is remaining committed to one another while the music superproducer is locked up ... with his baby mother Dana Tran, his daughter Love and his son Christian showing support to Diddy's twin daughters, Jessie and D'Lila.

Tran brought two-year-old Love to the game Friday night ... with the baby girl outfitted in a blue varsity jacket bearing her name and her birth year -- '22. Love's already camera-ready, pointing at the photogs at the game.

Dana's got her own varsity jacket -- a forest green one -- on ... and, she flashed a smile too-- keeping her spirits up while the father of her daughter deals with his legal troubles.

Art Garfunkel says a recent reunion with Paul Simon brought him to tears ... 'cause Paul opened up about how bad Art's past words hurt him -- and Art realized he'd really messed up.

The singer-songwriter sat down for an interview with The Times newspaper ... saying the two estranged former pals grabbed lunch together for the first time in years.

Garfunkel says he asked his longtime songwriting partner why they hadn't met in awhile -- and, Paul told him comments he made in an interview back in the day really cut him to the core. It's unclear which comments he's referring to.

Rita Ora could barely contain her grief while tributing Liam Payne at MTV's European Music Awards Sunday ... choking up as she lauded her late pal for his positive personality.

The singer-songwriter -- who hosted the show in Manchester, England -- took the stage during one break and highlighted Liam, who passed away after falling from a hotel balcony last month.

Rita starts out by saying the team behind the EMAs just wanted to take a minute to remember Liam ... a great friend to MTV and her personally.

America isn't the only place that loves a good award ceremony ... Europe clearly enjoys one too -- 'cause they brought out some big stars for the MTV European Music Awards.

Stars flocked to Manchester, England Sunday night ... for the annual event -- including Shawn Mendes who belted out a couple songs onstage at the newly opened Co-op Live.

Rita Ora handled hosting duties for the evening stunning in a futuristic outfit that showed off a ton of skin ... including her tight midriff. And, Jodie Turner-Smith presented an award in a low-cut, black dress.

Sabrina Carpenter's fans must've been saying "Please, Please, Please" be warm water ... 'cause several posted on social media saying they got straight-up peed on by a fellow fan -- who unleashed her stream in the middle of the pit!

Here's the deal ... Sabrina took the stage at Chase Center in San Francisco Saturday night -- serenading the packed crowd at the arena.

While her show seemed to go off without a hitch, some fans in the pit said their night wasn't so clean ... literally, 'cause they swear a woman squatted down and took a piss right next to them.

Britney Spears complained about her conservatorship on a TV show years before it ended, but the clip was edited out of the final cut and never seen ... until now.

Britney was a guest on "The Jonathan Ross Show" back in 2016 ... a talk show on ITV in Great Britain. She was promoting her album, "Glory," and during the chat the conservatorship came up.

Ross asked Brit, "The new album, you are more involved in this musically I understand than previous ones. So you've taken control. You're more in control of your music than before. Why did it take you so long? Why did you wait 'till now to do it?"