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Taylor Swift has yet another achievement to add to her long line of successes ... she's now a billionaire!!!

The Grammy-winning pop star currently has a total net worth of $1.1 billion and it's all thanks to her sold-out "Eras" tour that kicked off in March and extended through the summer, which also gave the U.S. economy a major boost, according to Bloomberg News.

Bloomberg says Taylor is one of just a few musicians who have reached this mountain top based solely on their concert and recording sales.

Needless to say, Taylor has had one helluva year so far. She's not only filling up huge arenas with her live performances, but she's also killing it at the box office.

In its first weekend, her concert film, "Taylor Swift: The Eras Tour," pulled in a whopping $96 million in the U.S. and Canada. AMC theaters reported that it was the highest-grossing concert movie ever domestically for an opening weekend.

What's more ... CNN says the "Eras" tour could bring $2.2 billion in ticket sales in North America alone making it the top-grossing tour of all time. Taylor ended the first leg of her tour in August, but there's a second leg launching next year in the U.S -- while her international leg begins next month.

As for her love life ... Taylor recently hit the jackpot with her new beau -- superstar Kansas City Chiefs tight end Travis Kelce.

The couple appears to be really into each other, going out and having all sorts of fun together. Taylor has even been attending Travis' NFL games and getting close to his parents.

Sam Asghari continues to show support for his ex, Britney Spears ... saying her kind words about him in her new book put a big smile on his mug.

Sam chatted about Britney's memoir, "The Woman in Me," Wednesday in Los Angeles ... as you know, she left him a glowing review, despite having the ability to change her opinion about him in the book after they broke things off.

She called him a "gift from God," amongst other big compliments -- and Sam clearly appreciated the kind words ... firing some right back at her.

He says he's "freaking proud" of Britney for putting herself out there in her chart-topping book ... adding, "I hope she takes over the world."

As we reported, Sam seemed to be the only one of Brit's exes that wasn't under fire in the memoir, leaving out the details of their intense split -- a sign they may have struck a settlement deal in their divorce.

Lady Gaga just made her own special debut at the Sphere in Las Vegas ... performing her hit track from "A Star Is Born" during a surprise appearance at U2's show.

The singer joined Bono and co. at the one-of-a-kind venue Wednesday night to sing "Shallow" -- a true treat for the massive crowd.

Those in the audience even joined in, with LG and Bono giving the crowd a chance to belt out the chorus for the Oscar-winning track.

That's not all, though -- Gaga also performed with U2 for the band's 1988 song, "All I Want Is You" ... making fans go nuts once again.

This ain't the first time the 2 forces of music teamed up, BTW ... you'll recall, she made a surprise appearance in 2015 during U2's "Innocence + Experience Tour," jamming out to "Ordinary Love."

Gaga's recent Sphere pop-in comes on the heels of her jumping on stage with the Rolling Stones in New York last week ... not to mention her brief appearance on Bad Bunny's episode of "Saturday Night Live."

Justin Timberlake is feelin' the heat amid Britney Spears' new book release -- and all the spilled secrets about their relationship -- but we're told his *NSYNC bros still have his back.

Sources familiar with the situation tell TMZ ... Lance Bass, Joey Fatone, Chris Kirkpatrick, and JC Chasez have nothing but love for Justin, and they're supporting him through all the harsh criticism due to "The Woman in Me."

We're told they've all known him for 25 years, and would be more than happy to be back performing with him ... despite all the negative energy Britney and her loyal fans are aiming at JT.

Remember, in her book Brit blames him for talking her into an abortion, accuses him of cheating and claims a run-in with Justin triggered a panic attack that ruined her 2007 VMA performance.

While *NSYNC fans and RCA Records would love another Reunion, it isn't in the cards right now -- we're told Justin's focused on his new solo single, album and a tour next year.

BTW, our sources say the hate JT's been getting isn't impacting his career plans. The single and tour for next summer are a full go -- however, we're told he's quietly removed some club appearances that were set for early next year, tied to the release of his single and album.

As we reported, there are no current talks about *NSYNC doing more together -- Justin said recording "Better Place" would just be a special thing for his 'Trolls' sequel.

J Balvin is praising Britney Spears for her tell-all memoir and the book's instant popularity ... telling us she deserves every bit of success coming her way.

We got the "La Canción" singer Wednesday in Tarzana and our photog asked him about Britney's new book, "The Woman In Me."

J Balvin says he's super proud of her and she's someone who deserves love and respect for inspiring so many folks across the world ... and he's glad to see her back on top.

Remember ... Britney celebrated earlier this month with J Balvin and Maluma, with the trio going out in New York during her promotional tour. J Balvin tells us Britney was in a really good place then, and he says that's going to set her up well for any hate she may get for her book.

But, so far, the reception has been mostly positive ... Britney's book is flying off the shelves and, as we told you, her music is getting a streaming bump too.

Britney Spears' book isn't the only thing with a lot of eyes and ears right now ... cuz her music has racked up MILLIONS of streams just one day after her tell-all hit shelves.

According to data from Spotify and YouTube, Britney's library received over 7.1 million streams Wednesday -- the day after "The Woman in Me" became available -- with Spotify accounting for 4.7M of those listens.

As for how the listening streams break down -- Britney's album, "In The Zone," grabbed around 1 mil ... "Circus" got 790k, "...Baby One More Time" got roughly 750k, and "Oops!...I Did It Again" had around 650k streams.

In terms of individual songs on Spotify, "Toxic" came out on top with around 680,000 streams -- while her other megahits like "Gimme More" "Oops! ... I Did it Again" and "... Baby One More Time" landed bewteen the 400,000 - 500,000 mark.

YouTube data shows "... Baby One More Time" -- her debut single -- grabbed over 400k clicks alone. Safe to say, there's some great cross-promotion going on here.

As we reported, Britney is reeling in 25% of net profits from her new book. Sources told us it should cover the advance she got, which was $12.5 MILLION. More than 400,000 copies have already been sold ... but our sources say the trajectory could go over 1M.

Britney Spears stands to make a fortune off her memoir, because TMZ has learned she's pulling in 25% of the net profits from the book.

Sources with direct knowledge tell TMZ, the 25% Britney is getting should cover the advance she got -- $12.5 million. There have been reports she received a $15 million advance, but we know it's $12.5 mil.

"The Woman in Me" is selling at $23.05 a pop on Amazon from its original $32.99 price ... $16.99 for Kindle. The audio CD goes for $29.69 a pop.

More than 400,000 copies have been sold, and the trajectory could take the book north of a million.

Our sources say the unsung hero in the success of the book is Britney's best friend/manager Cade Hudson. Multiple sources tell TMZ, Hudson repeatedly pushed Britney to write and finish the book. There were times she wanted nothing to do with it, but Hudson pushed her and eventually -- belatedly -- it happened.

7:31 AM PT -- Jason Alexander's got a bad case of revisionist history, at least when it comes to how sober he and Britney Spears were on their wedding day. Eight years after the ceremony he told ABC News they'd been drinking and had "party favors."

When asked if he meant drugs, he coyly pointed out alcohol, caffeine and cigarettes are all drugs. Point is, they were far from sober, and Britney fans are calling him out for lying.

Jason Alexander, Britney Spears' ex-husband, is clapping back at her claim she only married him because she was drunk and bored ... instead, he insists it was true, sober love.

Jason, who was married to Britney for a whopping 55 hours in 2004 before getting an annulment, tells TMZ ... readers shouldn't believe a word Britney says about their marriage in her new memoir.

In "The Woman In Me," Britney says she and Jason "got sh**faced" before tying the knot early one morning in Las Vegas back in January '04 ... adding, "People have asked me if I loved him. To be clear: he and I were not in love"

Britney also writes, "I was just honestly very drunk -- and probably, in a more general sense at that time in my life, very bored."

JA says that's BS because they were absolutely in love and weren't boozing -- which, btw, is exactly how their wedding officiant described the couple in a previous interview.

Jason says they've been friends since childhood, and he still cares for and loves her -- however, he adds, he'd never buy her memoir, and would only accept a copy if it was signed ... and, even then, he admits he'd probably "sell it to the highest bidder."

So much for the love!

Britney's revealed a ton of bombshells in the book ... and Jason says, in his opinion, Britney's abortion from her pregnancy with Justin Timberlake was a "horrible decision." Jason believes the two would've had enough money to raise a kid and get help as well.

He also weighed in on Britney's rationale for her nude photo posts ... saying he sees it as "childish behavior" from a mother, but he believes Justin cheated, and then broke up with Brit in response to her cheating. That's his 2 cents, anyway.

Britney Spears is over the moon over the spectacular success of her tell-all memoir, "The Woman in Me" ... and she jumped online to thank her millions of fans for their help in breaking records.

The singer hopped on Instagram Tuesday night -- the same day her book dropped -- to share her excitement ... "My book is the highest selling celebrity memoir in history and it’s only day 1 !!!"

She went on to thank the fans for their support, with good reason ... the book's sitting atop both Amazon and Barnes and Noble's best sellers lists since it debuted. It hasn't shown up on the New York Times Best Sellers List ... at least not yet.

As you know, Brit left a lot of juicy details about her past on the pages of her memoir ... dishing about her rocky relationship with Justin Timberlake -- claiming she had an abortion at his behest.

She also talked about her conservatorship, left a glowing review of her ex, Sam Asghari, and wrote about how her former hubby Jason Alexander "got sh**faced" before getting married in 2004 -- something Jason told us was total BS.

Britney Spears says a brief run-in with ex-boyfriend Justin Timberlake triggered a panic attack before her infamously bad 2007 MTV VMA performance.

Britney was set for a big return to the stage that night with her song "Gimme More" ... but was caught off guard when she saw JT at the show.

In her new memoir, "The Woman In Me," Britney recalls the interaction, writing ... "It had been a while since I'd seen him. Everything was going great in his world. He was at the top of his game in every way, and he had a lot of swagger. I was having a panic attack."

Britney says she "hated the way I looked" ... because "It was less than a year since I'd had my second baby in two years but everyone was acting like my not having six-pack abs was offensive."

What's more, Britney admits she hadn't rehearsed enough and knew the performance "was going to be bad." She says "nothing was going right" backstage ... claiming there were problems with her costume and hair extensions. She says she didn't sleep the night before, and was feeling dizzy.

Britney continued ... "I couldn’t believe I was going to have to go out onstage feeling the way I felt." She says she went out and tried her best, admitting it wasn't up to par for her.

She added ... "I could see myself on video throughout the auditorium while I performed; it was like looking at myself in a fun-house mirror."

JT, on the other hand, was on the other end of the spectrum in Britney's eyes.

She says, "Justin glided down the runway. He was flirting with girls in the audience, including one who turned around and arched her back, shaking her breasts as he sang to her."

Nikki Glaser is proving she's the ultra Taylor Swift fan, shelling out big bucks for the pop star's concert tickets.

The comedian appeared as a guest on "The Kelly Clarkson Show" Monday -- and admitted she anted up an eye-popping $25K for tickets to go see Taylor's super successful "Eras" tour last summer.

Chuckling, Glaser told Kelly, "I just want to say that it was a conscious decision because I went to nine "Eras" tour shows this year. "Like, when I'm not on tour, I go to her tour."

Glaser went on, "It just fills my life up with so much joy. I'm in my late 30s. I just feel like, I don't have kids, and I did the math and if I had kids, I'd be paying for dance camp and swim lessons."

For context, tickets for Taylor's shows go for between $49 to $499 a pop, depending on the seating section. Resale tickets can range from $500 to $7,000 each, but that's just chump change for die-hard Swifties like Glaser.

During her sit-down with Kelly, Glaser also joked that she saved all of her money to freeze her eggs, but then decided to spend the dough on Taylor's concerts, describing her actions as going "buck wild."

Taylor has also been going wild lately, turning the world upside down after she and Kansas City Chiefs tight end, Travis Kelce, revealed they're now an item. She has recently attended Travis' NFL games, rubbing elbows with his parents in their suite at Arrowhead Stadium in K.C.

Everyone is now wondering are wedding bells in the future for the lovebirds.

Oops, Britney Spears did it again -- at least according to the officer who pulled the singer over yet again in Southern California ... and this time, they say she crossed those pesky double lines.

According to court records, obtained by TMZ, Britney got a traffic ticket earlier this month ... after she was pulled over by California Highway Patrol for allegedly making an improper turn.

It says Brit crossed over double lines -- a big no-no for those who know the law -- and was hit with a $327 fine, which is now due by Nov. 21.

As we reported, Britney was pulled over last month by a CHP officer in Ventura County ... law enforcement sources told us she was stopped for speeding in her white Mercedes and was eventually cited for driving without a valid license in her possession and proof of insurance.

She had to cough up $1,140 in fines to clear those up -- but online records show she paid off the balance. Hey, at least she doesn't have two fines to focus on!

Britney Spears has revealed a lot ahead of her new memoir's release -- so, just to get you ready for its Tuesday release ... here's a look at her biggest bombshells, so far.

Of course, the biggest truth dropped in "The Woman in Me" is the fact Brit had an abortion in the early 2000s while dating Justin Timberlake -- something she seems to mostly pin on him, saying JT "didn’t want to be a father" and he "wasn't happy about the pregnancy."

Britney says she regrets giving up the baby, in hindsight. She says having the abortion devastated her, at the time ... and she says Justin tried to soothe her during the process by strumming a guitar.

There are more JT claims she's making in the book ... including the allegation he cheated on her with an unnamed celebrity. Britney also acknowledges she cheated on Justin with Wade Robson, but insists it was just a kiss. However, one of Britney's writing partners tells us the Wade relationship was much more than that.

Brit also addressed other elements of her private life, including the fact she'd started having sex at 14 -- with a friend of her older brother -- and that her drug of choice in her heyday was Adderall ... which she says helped make her feel less depressed.

Speaking of doing the dirty ... Britney says she had a hot fling with Colin Farrell back in 2003, where they were banging as if they were fighting, at least that's how she puts it.

Britney also reflected on her brief acting career ... saying her starring role in "Crossroads" was fun and all, but noting she didn't like the experience of having to pretend to be someone else. In that same breath, Britney also claims she almost snagged a HUGE role.

As it turns out ... Brit had actually auditioned for the lead female role in "The Notebook," opposite Ryan Gosling, and it sounds like she was in the running for a good while. In the end, though, she lost out to Rachel McAdams -- something BS says she's happy about.

There've been countless other revelations that have leaked out thus far -- including the fact Britney says she posts so many nude photos of herself as an act of liberation ... this after being under the constraints and control of a conservatorship for so many years.

Britney has also spoken at length about that conservatorship in her book ... and one of the latest nuggets she opened up about, as it pertains to the legal apparatus, is that she only "went along" with it as a way to get back to her children -- whom she'd lost custody of in 2007.

Britney Spears' iconic hit, "...Baby One More Time," almost wasn't hers at all ... 'cause the producer of the famous track shockingly got turned down by groups like TLC and the Backstreet Boys!

Swedish music producer Max Martin had already made a name for himself in the '90s, working with Backstreet Boys on "Quit Playing Games" and Robyn on "Show Me Love" ... but for some reason, 'Baby' wasn't something his past collaborators were feeling.

He also hit up TLC, who were gearing up for their first album in 5 years, and they didn't bite either -- but 16-year-old Britney, the former "All-New Mickey Mouse Club" member, turned the tides.

Britney was flown out to Sweden as a teen to work with Max on her debut album, and he played her a demo of himself singing the song ... and she was hooked.

She went on to record the track, as well as 6 others, with Max during her week in Stockholm ... and as you know, what came after was INSTANT success -- 'Baby' made its way to number 1 on the Billboard Hot 100 and was nominated for a Grammy.

It also landed a spot in Rolling Stone's 500 Greatest Songs of All Time, and has been covered countless times by artists.

BTW, Simon Cowell heard about 'Baby' before it ever came out -- the 'AGT' judge revealed on the "Howie Mandel Does Stuff" podcast earlier this year that he called up Max and begged him to give him the song for Five, his boy band at the time, but Max shot him down.

Madonna apparently still isn't 100% after her lengthy, life-threatening hospitalization -- but despite this, she's still powering through on the road ... and her fans are worried.

The singer made the troubling revelation over the weekend while performing in Belgium, where she continues on her mountain of a tour. She's got a dozen more stops across 15 different countries -- that's the plan, anyway -- but, in her own words, the Material Girl's simply not feeling great.

Madonna said this in the context of discussing her health scare earlier this year -- which saw her in the ICU for a time, fighting for her life after a bacterial infection -- something she says she's thankful to have survived ... while in the same breath, reminiscing on her late mother.

Madonna says it's a miracle she came out on the other side of that ordeal, but folks online focused on her words about how she's feeling right now .. which sounds iffy, at best.

Strangely enough, Madonna was drinking onstage out of what looked like a beer bottle ... and like we said, she finished the show -- not to mention a string of London performances she did last week to kick off this international tour. So, on its face, she appears okay enough to get through it.

Still, people are weighing in, expressing their collective hope she's getting the proper health care she needs -- and more importantly, sound medical advice.

The sentiment from her fans here is ... don't force yourself to do this if you're struggling, 'cause we'll love you anyway. Remember, this tour was postponed for a good long while this summer as Madonna battled her infection, and she seemed set on seeing it through.

Will Ferrell's been revisiting his old hits lately, including this weekend -- when he teamed up with John C. Reilly to honor none other than Snoop Dogg ... who hit a big milestone.

Indeed ... the notorious 'Step Brothers' got together to sing one of their ditties from the movie Saturday night in L.A. -- where Will hosting some benefit concert at the Greek Theater, and where the two former costars got onstage to belt out a fan fave, 'Boats and Hoes.'

Fans of the film remember that one well -- only this time, a surprise guest was added to their lineup, and that'd be Snoop, who was celebrating his 52nd birthday from the day prior.

The performance, as it turns out, was mostly led by the Doggfather ... who fit in flawlessly.

You can tell Will and John really wanted to make Snoop feel special -- because at one point during all the fun, they presented him with a 3-tier birthday cake ... which SD was proud to show off on social media.