Pop Music

American pop band Echosmith -- made of siblings Sydney Sierota, Noah Sierota, Graham Sierota, and Jamie Sierota –- rose to superstardom when their hit song "Cool Kids" hit the charts back in 2014.

The bop hit number 13 on the Billboard Hot 100 and remains echoing in our heads to this day.

Do we smell a new feud brewing?!

Madonna seemed to take aim at Charli xcx on social media ... saying if you're not into the groove, you're not listening to the right club classics.

It sure sounded like she was calling out some of Charli's recent comments in the caption, writing ... "If your Dance floor feels dead Maybe you’re playing the wrong music."

Harry Styles’ team is reviewing parts of the stage setup for his "Together, Together" tour ... after some fans complained about restricted views from certain sections in the stadium.

A rep for the tour tells TMZ ... "The floor concept was designed to give fans freedom of movement and the ability to experience the show from different positions, rather than being confined to one fixed viewing angle. That open, free-flowing floor experience has always been an essential part of Harry’s live shows."

The statement continues ... "A small area of the staging in specific floor positions appears to have had a restricted sightline. Those areas are being reviewed carefully and adjusted where possible in compliance with all safety restrictions."

Aqua -- the European dance-pop group behind the hit song "Barbie Girl" -- is breaking up almost 30 years after the release of their global hit.

Band members Lene Nystrøm, René Dif, and Søren Rasted took to social media to announce the end of a 3-decade era, writing ... "AQUA has been such a huge part of our lives, and together we’ve had the chance to experience more than we ever dared to dream of."

They thanked fans for their support and noted that they've got "nothing but love and gratitude" for their time in the group.

Harry Styles launched his "Together, Together" tour in Amsterdam Saturday night with none other than Zoë Kravitz spotted in the crowd, supporting her reported fiancé.

The actress was seen attending Styles’ show in The Netherlands, where the singer launched his latest run of performances to a packed arena ... following the release of his album "Kiss All the Time. Disco, Occasionally."

Kravitz appeared relaxed and like a proud wifey as she watched from the audience -- alongside comedian and longtime friend of Styles, James Corden -- cheering on her reported fiancé during the high-energy set.

Taylor Swift and Travis Kelce may not be married yet, but they're certainly acting like a married couple while out and about in NYC.

The famous lovebirds hit up a private event at Honey's cocktail bar in Williamsburg, Brooklyn on Saturday night. After being chauffeured to the pub, the two hopped out of an SUV in their stunning outfits and walked hand-in-hand to the front door.

Travis then placed one of his hands gently on Taylor's back as he guided her inside the building.

Taylor Swift has been all over the Big Apple recently, and now she’s hitting the town with her man -- Travis Kelce -- for a dinner date ... while the lovebirds keep the world in utter suspense about ... well ... you know what.

The power couple was photographed by paparazzi Friday night, strolling hand-in-hand through Manhattan's Soho neighborhood before heading inside Or’esh, a fancy Mediterranean restaurant. 

Taylor couldn't help but smile in her chic flowery dress and high heels while rocking the engagement ring given to her by her hunky fiancé. Speaking of whom, Travis was also sporting a grin while dressed in dark pants, black dress shoes and a pinstripe button down shirt with animal patterns. 

Britney Spears has a wild Friday night lined up ... complete with buttered popcorn, Slurpees and a movie theater screening of "The Devil Wears Prada 2."

The pop icon just shared a wild video, which sure seemed to be in her car, apparently on the way to the theater ... and she says she's going to chow down on popcorn with loads of butter and wash it all down with an iced beverage. Worth noting ... it appeared Brit was in the driver's seat when she made the video.

Britney says she's buying a ticket for 'TDWP2' ... even though she prefers Gucci or Chanel ... but as she says, if the Devil is down with Prada, then so be it.

Britney Spears is back out in public after her bizarre and chaotic restaurant incident sparked concern among diners.

The Princess of Pop was photographed Thursday afternoon leaving Paw Works pet store in Thousand Oaks, CA, hopping in the passenger seat of her black Mercedes G-Wagon while her driver took the wheel. Britney appeared carefree during the outing, even kicking her feet up on the dashboard.

It's the first time Britney's been seen since we broke the story that the singer caused a chaotic scene Wednesday night at Blue Dog Tavern in Sherman Oaks.

Lady Gaga gave fans a shock on Thursday in Los Angeles ... when the superstar gave an unexpected performance for the one-night showing of her concert film "Mayhem Requiem."

Social media was flooded with videos of Gaga dressed in a flowing red-and-black Victorian gown, making her way around The Grove ... heading out of the Apple Store and over to a nearby AMC Theatres location, backed by a New Orleans-esque marching band playing her "Mayhem" hits as 40 goth performers writhed and crept along.

The surprise appearance promoted the one-night-only event premiering her live performance film, 'Mayhem Requiem' ... recorded at her January concert at The Wiltern.

Gaga also gave a short speech before the film screened, talking about the process of creating the project and how much it means to her. She also thanked the fans for their undying support and love. "Mayhem Requiem" is streaming on Apple Music.

The TMZ Celebrity Tour Bus hit the streets again Wednesday night -- and this week's surprise guest was none other than Diplo!

Yep, the superstar DJ pulled up for the Hollywood tour alongside British babe America Foster ... who opened up about making history as the first female member of EDM group Major Lazer.

The vibes were already turned all the way up -- because it also happened to be Foster's birthday ... the singer celebrated hard onboard, dancing it up and flexing some seriously killer vocals for the crowd.

8:21 AM PT -- A rep for Britney tells TMZ ... "This is completely blown out of proportion. Britney was enjoying a quiet dinner with her assistant and bodyguard. She was simply telling the story about how her dog was barking at the neighbors."

They continue, "At no point did she put anyone in danger with a knife. She was cutting her hamburger in half. This constant attack on everything that she does and this is exactly what happened 20 years ago when the media tried to depict Britney as a bad person. This is ridiculous and it needs to stop now."

Britney Spears enjoyed a night out with friends at a Los Angeles area restaurant ... but TMZ has learned things got erratic fast -- with barking, yelling and even a knife involved.

Here's the deal ... sources tell us the Princess of Pop grabbed a corner table with a man and a woman at Blue Dog Tavern in Sherman Oaks Wednesday night ... and quickly started causing a scene.

We're told Britney was raising her voice, screaming, and even barking at times ... with witnesses describing the vibe as chaotic and "kind of sad" ... though she still looked cute.

Britney Spears' youngest son continues leaning into the spotlight, and he's doing it in serious style.

Jayden Spears made an appearance Wednesday night at the Dior Cruise 2027 show, held at the Los Angeles County Museum of Art in L.A.

The 19-year-old looked right at home among the fashion crowd, confidently posing for photos and taking in the star-studded event while mostly keeping a low profile throughout the night.

Taylor Swift was giving off major bridal era vibes in NYC on Tuesday as her wedding to Travis Kelce grows closer and closer.

The pop superstar was decked out in a form-fitting white mini dress as she and her friends, including BFF Ashley Avignone, went for dinner at Manhattan's Via Carota restaurant.

Check out the photos ... Taylor looks like she's ready to walk down the aisle in her $398 Retrofête dress as she makes her way inside the West Village eatery with Ashley just steps behind. Taylor also sported black Gucci high heels with a Dior bag slung over her shoulder.