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Celine Dion felt the love this weekend ... 'cause a world-class cellist honored her with a rendition of her "Titanic" theme -- and safe to say she's never gonna let go of the memory.

The singer-songwriter attended HAUSER's "Rebel With a Cello" show at Wynn Las Vegas Saturday night ... if you don't know, HAUSER's a prominent cello player from Croatia.

Celine got applause when she arrived at the venue ... so, clearly, it was no secret she was in the crowd -- and, HAUSER played "My Heart Will Go On" as a way to honor the music legend.

Tom Cruise's appearance at Taylor Swift's London concert on Saturday was not only a huge hit with fans ... but he was also super popular with the pop star's boyfriend, Travis Kelce.

Check out the video ... Tom was sitting in a VIP box while grooving to Taylor's music with a big smile on his face. Travis was also grinning while standing behind Tom and placing both hands on his shoulders.

Travis then leaned in and said something to Tom, prompting a little laugh from the acting legend. Tom then patted Travis' hand as a friendly gesture.

Tom Cruise engaged in some risky business Saturday ... hitting up Taylor Swift's London show -- after skipping his daughter's high school graduation.

Swifties captured TC walking into Wembley Stadium for Night 2 of the show ... and, check out the clip, 'cause he's got time for just about every fan he passes -- slowing down to say hello and take pics with excited fans.

He's clearly the life of the party ... big grin gleaming as he makes his way toward what we imagine's a swanky, private area to watch Taylor perform.

Duff McKagan's responding to "The Simpsons" name controversy ... saying he really doesn't care even if they did use his name -- but, he still thinks the connection's obvious.

We caught up with Guns N' Roses rocker in L.A. Friday and asked him about OG 'Simpsons' writer-producer Jay Kogen telling us the show's premier beer -- Duff -- isn't named for him ... instead, it's named after dude's who just sit on their butts and drink beer all day long.

DM tells us he thinks it's super funny the show's creators are all in a tizzy over his claims ... adding they're all protesting jway too much.

Kendrick Lamar's music video's bringing out massive crowds who just want to catch a glimpse of the homegrown rapper -- who's right in the middle of the craziness.

Videos are pouring onto social media from the South Los Angeles neighborhood ... and, ya gotta check them out for yourself 'cause it looks like one giant block party out there.

People are standing around in the hot sun waiting just to catch a glimpse of their fav rapper ... who hasn't disappointed by the way -- 'cause he's hugging and stopping for pics whenever he can.

The Prince of Wales boogied his ass off to Taylor Swift's music during her London concert Friday -- and we have the video to prove it!!!

Last night, Prince William celebrated his 42nd birthday by attending the pop star's sold-out Eras Tour performance at Wembley Stadium with his two eldest royal children ... George and Charlotte.

Check out the footage ... one of Taylor's gazillion fans used a cell phone camera to capture the prince rocking out to her famous tune, "Shake It Off."

Justin Timberlake opened up about his DWI arrest during his Friday night concert in Illinois, emotionally telling the crowd he had "a tough week."

The singer/actor hit the stage at Chicago's United Center for his first performance of his 'Forget Tomorrow' world tour since he was busted last week for DWI in New York.

Check out the video ... Justin was standing at the mic with an acoustic guitar strapped around his body as the audience cheered.

Taylor Swift is still letting Travis Kelce know that he's her soulmate – even while she's performing in front of a packed audience!!!

The pop superstar hit the stage at London's Wembley Stadium on Friday as her lover and number one fan, Travis, watched from the crowd with his brother, Jason, and sister-in-law Kylie Kelce.

While Taylor was cranking out her hit, "So High School," she imitated an archer pulling back on a bow with an arrow before she parked herself on the bleachers to continue singing, while swag surfing along with her dancers.

Prince William and his kids appear to be Swifties ... because the Prince of Wales reportedly took the kiddos to Taylor Swift's 'Eras' Tour concert in London.

William was in the house Friday night for Taylor's show, with his 2 eldest children in tow ... George and Charlotte ... at least according to a report from across the pond. Royal reporter Roya Nikkhah says PW is at the London shindig with the kiddos, ringing in his born day.

Taylor's London performance happened to land on William's 42nd birthday ... so it seems like this was his big bday present. They've rubbed elbows before BTW, but that was way back in 2013.

Taylor Swift's ready to have tea and crumpets with her man Travis Kelce after her show tonight ... 'cause he's out in London to support her -- and, it looks like it's a double date.

The singer-songwriter took the stage in England's capital at Wembley Stadium ... and, TK's front and center, dapping up his friends and signing autographs for fans in the crowd -- a real joyous scene.

BTW ... Travis is definitely bringing a taste of America across the pond -- 'cause he's got a U.S.A. Olympic cap on, so the dude's looking pretty patriotic.

The legend of Taylor Swift grows -- she once extinguished a fire in her New York City apartment after flames erupted in her kitchen ... and now, we're seeing it all on video.

TayTay's singer friend, Gracie Abrams, just shared footage of Taylor handling a fire extinguisher and putting out a big flame that was burning on the kitchen island in her $50 million Tribeca pad ... this after talking about the incident earlier in the week.

Gracie told Billboard she and Taylor stayed up all night writing her new song "Us" when the fire started in another room ... a candle from their dinner party had fallen over and ignited the blaze -- but at first, they didn't realize that's what happened.

Dave Davies is trying to get an important trophy he once had after it vanished and recently showed up for sale online ... but might have to give up another prized possession to do it.

The Kinks rocker hopped on X this week to lament the fact that his 1990 Rock and Roll Hall of Fame award -- a statue with his name on it -- surfaced on eBay ... with the seller of this rare collector's item claiming it fell into their lap, with them trying to hawk it for over $12k.

Now, Davies is giving us more insight into what happened here ... and more importantly, how he plans to get the HOF trophy back. He tells TMZ the award went missing back in the day after he suffered a stroke … and he's gobsmacked to see it all these years later.

Queen's catalog is about to change hands, and it'll be an expensive acquisition -- 'cause Sony's acquiring the rights to the band's music ... spending 10 figures to lock it down.

The massive transaction -- valued at about $1.27 billion -- involves Queens' royalties for recorded music rights in the United States and Canada, plus a distribution deal outside the U.S. and Canada ... according to Variety.

Sony Music is buying the rights that used to belong to Disney, while Queen's distribution deal is currently managed by Universal and is going to expire in a couple years, at which point Sony will take the reins.

Katy Perry is facing backlash for again working with music producer Dr. Luke ... almost 7 years after being dragged into his legal battle with Kesha -- who seems to have chimed in.

According to Rolling Stone, Katy is collaborating with a slew of music producers for her untitled 6th studio album. Per the report, Katy has tapped the producers who helped make hits on her albums "Teenage Dream" and "Prism" ... including Max Martin, Dr. Luke, Stargate, among many others.

Because Katy is going back to Dr. Luke well for her new tunes -- Kesha's fans are PISSED and dragging her for the decision ... calling it a betrayal. And Kesha seems to agree.

Sabrina Carpenter needs a clear path for herself free of adoring fans -- and that's exactly what her security provided this week across the pond ... in not-so-subtle terms.

The singer's bodyguard got filmed shoving people outta the way upon her arrival to London BBC Radio 1 Studios Tuesday ... specifically, photographers that were trying to snap pictures of her as she was heading into the building.

There was one dude on her staff who was leading the way with some pretty rough shoves -- getting handsy with paps and roughly powering through to make way for his client.

Justin Timberlake is now a member of the celebrity mug shot club ... as his booking photo from jail has been released following his DWI arrest -- and he certainly looks bleary-eyed.

TMZ has obtained JT's mug shot -- released by Sag Harbor PD -- and it's certainly one for the books ... Justin is stoic here, not smiling and with an expressionless face as the camera flashed. His eyes are wide ... and he definitely looks like he's not happy to be there.

The singer was arrested on Monday evening after being pulled over by police in Sag Harbor, NY for driving while intoxicated. In a police report obtained by TMZ ... cops say they first spotted Justin after he blew through a stop sign. JT sparked further concern after his gray BMW UT was allegedly swerving on the road.