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Shawn Mendes has heard the years-long buzz about his sexuality, and he addressed it head on Monday night at his concert ... saying it's a work in progress.

Shawn performed songs from his new album at the Red Rocks Amphitheatre in Colorado, and opened up in a stunningly honest way, saying, "The real truth about my life and my sexuality is, man, I'm just figuring it out like everyone. I don't really know sometimes and I know other times."

Mendes, who was recently linked to both Camila Cabello and Sabrina Carpenter, went on ... "I think it's kind of silly because I think sexuality is a beautifully complex thing and it's so hard to just put into boxes."

Taylor Swift performed all weekend in Louisiana without her boyfriend, Travis Kelce, watching from the crowd ... but he was seemingly top of mind during her concert last night.

The pop star hit the stage for her sold-out Sunday show at Caesars Superdome in New Orleans -- and, while belting out her song, "Midnight Rain," she showed off a variation of Travis' signature pose whenever he makes a first down for the Kansas City Chiefs.

Check out the video ... Taylor uses her index fingers to simultaneously point to one side and then she blows a kiss to the crowd before twirling around and walking away.

Luke Combs, Eric Church and more country stars teamed up for a good cause ... and, they raised a ton of money for people affected by Hurricane Helene.

Twelve country music stars pulled up to Bank of America Stadium Saturday night for the largest concert in the venue's nearly 30-year history -- bringing out a crowd of 82,193.

The Panthers play in BoA Stadium ... and, the team's owner David Tepper and his wife Nicole allowed the stars to use it, free of charge, so all the money raised could go directly to the people who need it most.

Taylor Swift took over New Orleans Saturday night, with an assist from Sabrina Carpenter.

T.S. hit the stage at the Caesars Superdome for her "Eras" tour and performed a slew of hits when she grabbed a cell phone in front of 65,000 screaming fans and gave Sabrina a jingle ... then summoning her to the stage.

Sabrina obliged and she and Tay sang a duet, which made the crowd go even more insane.

Adele had a tearful interlude at her Vegas residency Saturday night ... when she spotted a fan in the audience ... and that would be Celine Dion.

Adele was singing "When We Were Young" at a packed arena at the Colosseum at Caesars, when she eyeballed the famous Canadian in the crowd.

Adele beelined it over to the "My Heart Will Go On" singer ... the 2 embraced as Celine clasped Adele's face. Tears flowed and Kleenex appeared.

Taylor Swift took a moment during her "Eras" tour concert in New Orleans Friday night at Caesars Superdome ... to share some love with her devoted fans.

Saying she was deeply touched that her fans have "created traditions" amid a "mass movement of joy" ... TS noted she was in awe of how iconic friendship bracelets had become among them.

“I just showed up one day and you guys were trading friendship bracelets ... and I was like ‘that’s cool’ and now there is a giant friendship bracelet on the outside of this stadium."

11:00 AM PT -- A source with direct knowledge tells us Chappell Roan yelled at the photographer on Friday because the same person pissed her off at a different event with alleged obnoxious behavior ... and CR remembered.

The photog did offer an apology ... but it's not clear if it was accepted.

We're told it is NOT the same photog who pissed her off in September on the red carpet at the MTV Video Music Awards, as you'll recall.

Chappell Roan can't escape all the drama in her life .... or the paparazzi!!!

Singer Loomis is giving insight into her botched take on the National Anthem ... defending she's actually a good singer, despite her poor performance.

We caught up with artist in Los Angeles Friday, after she asked to "go back" and start again while singing the U.S. anthem during the Free and Equal Elections Presidential Debate Wednesday.

However, Loomis defended that her nerves and her confusion about how the event was being broadcast caused her to make her impromptu request mid-song.

Madonna knows the "Power of Saying Goodbye" … visiting the gravesite of her late brother, Christopher Ciccone, after his death earlier this month.

Madonna documented her poignant visit to her late sibling’s grave – which is located in their home state of Michigan – by posting a number of intimate photos to her Instagram Stories Friday.

The Material Girl wasn’t alone on the trip to Christopher’s headstone, which she dubbed a “homecoming," as her daughter, Lourdes Leon, was by her side.

Phil Lesh, co-founder and bassist for The Grateful Dead, has died ... his official Instagram account announced Friday.

According to the update, Phil, who worked closely with late frontman Jerry Garcia for 3 decades, passed away "peacefully" Friday morning surrounded by his family.

The statement continued ... "Phil brought immense joy to everyone around him and leaves behind a legacy of music and love. We request that you respect the Lesh family’s privacy at this time."

Step aside, Fergie ... up-and-coming singer Loomis is the latest person to totally butcher the National Anthem, and the flub is super toe-curling, to say the least.

As you can see, the singer starts off strong at the Free and Equal Elections Presidential Debate on Thursday ... but quickly goes off-key, losing her cool and begging into the mic, "I f***ed it up, I f***ed it up. Can I go back, can I go back please?"

As if that weren't enough, a cameraman chimes in to let her know she’s live -- and she’s horrified, trying to soldier on ... but her cracking voice gets worse.

Paris Hilton is sliving after performing a 17-song set at the Hollywood Palladium ... saying as much during an intimate meet and greet with fans after her epic show.

Check it out ... the heiress-turned-DJ took time on Thursday evening to chat with a group of VIP fans, all of whom gush about her performance while posing for pictures with the reality TV legend.

Paris was equally giddy during the exchange, confessing the evening was the "most iconic" of her life ... which is certainly saying something given her social calendar to date.

Nicole Scherzinger stayed friends with Liam Payne right up until his death ... with one of her Broadway colleagues revealing the two texted on the day he died.

Andrew Lloyd Webber -- famed composer of some of the biggest Broadway shows ever -- sat down for an interview with Billboard to talk about the "Sunset Boulevard" revival running on Broadway. Nicole stars in the show, and Andrew touted her for her composure.

Lloyd Webber says a chief example of this came on the day Liam passed ... saying Liam and Nicole were sending messages back and forth in the afternoon. She found out he passed just before the show -- but, still went out and put on a great performance for reviewers.

One small item found in Liam Payne's hotel room is getting a lot of attention from cops investigating his death, because it might unlock the mystery of who helped him score drugs ... TMZ has learned.

Law enforcement sources in Buenos Aires tell us ... authorities are now investigating the possibility a hotel employee delivered drugs to Liam, which has them focusing on a Dove soap box found in the room, and seen very clearly in a photograph taken after Liam's deadly fall.

The box was on the same table where cops also found drugs and paraphernalia -- tinfoil used to ingest drugs, as well as white powder.

Taylor Swift's about to get a larger-than-life "Eras" tour welcome ... 'cause New Orleans has dressed up the Caesars Superdome with some totally on-brand vibes.

The Big Easy venue's been blinged out with a giant friendship bracelet to greet Taylor before she kicks off her 3-night concert takeover of the town Friday.

It's definitely one heck of a personal touch that really amps up the excitement from both fans and the city to welcome Tay Tay.

Police in Argentina are moving full steam ahead in the Liam Payne death investigation ... raiding the hotel where the former One Direction singer plunged to his death.

Law enforcement sources tell TMZ ... cops in Buenos Aires showed up at the CasaSur Palermo Hotel Wednesday night to review electronic and paper records following the October 16 tragedy in which Liam fell from the third-floor balcony of his room into a courtyard.

Our sources say Liam's initial autopsy results revealed he had "pink cocaine" in his system, a dangerous cocktail of various drugs such as meth, ecstasy and ketamine, as well as other narcotics.