George Washington's real-life hair is hitting the auction block -- and the people selling it think it'll go for tens of thousands of dollars ... can't lie, that's nuts.

That's right ... the first President of these United States is having a thick lock of what's been presented as his actual hair sold at auction next month though RR's online auction house -- which we're told is expected to fetch upwards of $50k, maybe more.

Our sources tell us this particular lock of white hair -- measuring in at 4 inches -- was cut by one of George's relatives while he was serving as Prez in 1790. It was memorialized with a handwritten "letter of provenance" (like a certificate of authenticity) in 1889 as it was passed to different parties, including the man who introduced caramel candy to America.

The letter reads, in part ... "This lock of hair was cut from the head of George Washington, about the year 1790, by a relative of his. It was presented by this same relative to Capt. Samuel Butman of Newburyport, Essex County, Massachusetts; with whom the aforesaid relative made several trips from Alexandria, Va, to the port of Newburyport."

It goes on to say that Captain Butman's widow gave the relic to someone named George M. Elliott, who went on to gift it to the guy who finally gave it to C.F. Gunther ... the caramel guy.

Wanna know something even cooler? GW supposedly didn't wear a wig -- like many of his contemporaries -- and actually powdered his own 'do. It's possible he might've had grey or white hair in 1790 (he was about 58), but George was naturally a brownish-redhead.

If you think $50k is kinda steep for old musty follicles, welp ... history's been written, and we're just paying the price. And, guess what ... it ain't cheap.

Michael Holston, the internet sensation famously known as The Real Tarzann, is being sued over a prickly little critter ... a woman claims he's got her pet porcupine locked in a cage and won't fork it over!!!

According to legal docs obtained by TMZ ... Corinne Oltz, the operator of Wild Animal World in Florida, claims a prehensile-tailed porcupine named Pickles went missing from her operation last year and ended up in Holston's care ... and she says he's refusing to return her exotic pet.

Oltz claims the animal disappeared back in December, and this May she was notified of Pickles' whereabouts ... a cage on property in Miami, where Tarzann is the primary caretaker.

In the docs, Oltz claims she's made several attempts to bring home Pickles ... but says Tarzann, who fancies himself an animal educator to his 500k YouTube subscribers, is giving her the cold shoulder.

Oltz claims Tarzann is NOT Pickles' owner -- she claims she is -- so she's suing Holston and the owner of the property for $5,000 ... what she says Pickles is worth.

We reached out to The Real Tarzann ... and we're on pins and needles awaiting a response.

If Conor McGregor's keepin' it 100 about wanting a Frankie Edgar fight, he's got a willing dance partner, 'cause the UFC superstar from Jersey tells TMZ Sports he'll literally fight Conor at "any weight, any time."

Remember, last week The Notorious told ESPN's Ariel Helwani that he admired Frankie ... and was interested in a bout with the former 145 pound champ.

But, is Frankie -- who declared he was going down to 135 pounds after losing to Max Holloway -- down for that fight?

Hell yes!

"I'm game, he knows I'm game. I'm supposed to go down to bantamweight, but I will obviously delay that for the McGregor fight."

Edgar says Conor's interview actually made him optimistic the fight could finally happen ... after years of talk.

"It gave me hope that maybe I could get a fight with him. I've been trying to fight this guy for a really long time."

McGregor said he was targeting an Octagon comeback before the start of next year ... and Frankie says he wants to fight once more before 2020 rolls around.

So, what's Edgar's message to Conor?

Model Tiffany Keller is serving up the ultimate combo ... smoking hot bikini pics with a puppy!!!

Tiffany took her pups -- and her pooch -- to the beach, setting up shop in some sexy swimwear, just steps away from the world famous Santa Monica Pier ... and these images are sure to make your tongue wag!!!

Bonus points for the dog name, Tiffany ... she's dubbed her furry friend here Johnny Drama ... and doggone it, this just keeps getting better and better!!!

Tiffany's a force in the modeling world ... she's walked the runway at Miami Swim Week for Beach Bunny Swim and Prey Swim, and she's been featured in Galore Magazine and modeled for Windsor Store ... solid resume, for sure.

Easy to see why Fat Joe and Chris Brown wanted her in their hit music video, "Another Round" ... Tiffany's a straight-up dime!!!

Fetty Wap's in big trouble for busting out a can of whoop ass on a Las Vegas valet ... at least according to staffers at the Mirage Hotel and Casino.

Law enforcement sources tell TMZ ... the rapper was arrested Sunday at the Mirage after he and one of the valets got into a dispute. Things got physical and Fetty allegedly uncorked at least 3 punches on the valet.

We're told another Mirage staffer made a citizen's arrest ... holding Fetty until Las Vegas Metro PD showed up to take him into custody. Our sources say the Jersey rapper was booked for 3 counts of misdemeanor battery -- one for each punch he's accused of landing.

FW was only in custody for a few hours before he was released -- but he'll have a date with the judge before too long.

Miley Cyrus' Labor Day plans appear to include Kaitlynn Carter -- and the two of them seem to be working out splendidly since their rendezvous in Italy.

The singer was out Sunday with her rumored GF for what we're told was a lunch date in the L.A. area -- with none other than Miley's mom, Tish, tagging along for the ride ... again.

You'll recall ... the trio went out for some grub together just a few weeks ago -- this shortly after Miley and Kaitlynn returned to the States from their Italian vacay ... and obviously very shortly after Miley announced a split from her estranged-hubby, Liam Hemsworth.

TMZ broke the stories ... Liam recently filed for divorce from Miley, but she'll keep the pets they owned together when everything's said and done. It's been pretty nasty thus far.

As for this, Miley and Kaitlynn have been fairly inseparable since they touched down in L.A., when they drove home in the same car. Of course, they've each had solo outings ... but more often than not, they seem to be tied at the hip ... and Kaitlynn's clearly gotten familiar with mom.

Meanwhile, Liam's been laying low in Australia ... hanging with his brother, Chris, and the rest of the fam there. More recently, he seems to be turning his focus on a new movie he stars in called "Killerman." LH plays a guy who lost his memory in a drug deal gone wrong.

Pete Davidson's bumpy week appears to be going a lot smoother now that he's out of the States and in Italy with Margaret Qualley ... whom he's supposedly dating.

The 'SNL' star was leaving a hotel in Venice Sunday night alongside Margaret -- who's there for the Venice Film Festival, which debuted her new flick, "Seberg," Friday. Pete was at the screening too -- sitting behind Margaret -- but they didn't walk the red carpet together.

Well, they weren't shy stepping out together here as rumors swirl about their relationship. Word around town is they're an item -- have been for a minute now, apparently.

Remember, Pete's last flame, Kate Beckinsale, was spotted smooching another dude way back in June. So, if these two are, in fact, dating ... it would be safe to assume things got started right around then. Whether it's stand-up woes or women ... never a dull moment.

BTW, if Margaret looks familiar to you, it's probably 'cause you've seen her in few notable things over the past couple years or so -- including a prominent role in Tarantino's 'Once Upon a Time.' She's the Manson Family chick who invites Brad Pitt to the ranch.

She was also in HBO's "The Leftovers" in 2017 -- playing Justin Theroux's daughter -- and she was recently nominated for an Emmy for her role in FX's "Fosse/Verdon."

The "Beverly Hills, 90210" reboot has been on the air for about a month now, and it looks like the big reunion is continuing off-screen with a revived pop-up from the show.

'90210' stars Brian Austin Green, Ian Ziering and Joe E. Tata were among some of the actors who showed up Friday to a Johnny Rockets in L.A. that had been transformed into the Peach Pit -- the same after-school hangout from the show, with the fictional owner to boot.

Looks like they did a pretty intricate job at reimagining the joint ... the menus were changed and everything, and even some of the grub appeared to be Peach Pit specials.

Now, the Peach Pit pop-up isn't entirely new -- the gang did the same thing earlier last month ahead of the debut of their new spin-off, 'BH90210,' which stars much of the OG cast.

This time, Brian and co. ran it back as part of a special event for a live episode of his podcast, "...with Brian Austin Green," which he recorded at Torrance High School (the filming site from way back in the '90s). The proceeds they raised this weekend was donated to charity in honor of Luke Perry -- who died this year before the new show launched.

Seems like the Peach Pit experience went off without a hitch. Here's hoping someone had a Made-to-Order-by-McKay burger to bring it all home.

One of Kevin Hart's classic cars ended up in a ditch in the Malibu Hills after veering off the road ... TMZ has learned, and looking at the damage ... it's a miracle he and 2 other people in the vehicle survived.

The accident happened just before 1 AM Sunday on the winding and treacherous Mulholland Highway. Crash scene video, obtained by TMZ, shows Kevin's Plymouth Barracuda deep in a gully about 10 feet off the road.

The car smashed through wooden fencing along the roadside, and you can see the roof was completely crushed by the impact.

Cops have confirmed the vehicle belongs to Kevin, but they tell us he was not driving at the time of the accident. There were 2 other people were in the car, including the driver -- and cops say Kevin and the driver both suffered "major back injuries."

The third person is a woman who did not require hospital treatment. Police say the driver had not been drinking.

Kevin was first out of the vehicle and according to a witness, a member of his security team showed up in an SUV and picked him up. Kevin lives nearby and cops say he went home "to get medical attention." He was eventually treated at a hospital.

Earlier, on Saturday ... Kevin posted a video of himself in his vintage ride, as someone yelled at him for laying down too much rubber on the street as he spun out his tires.

Kevin bought the car back in July as a 40th birthday gift to himself.

Robert F. Kennedy's assassin appears to be okay after being stabbed in prison, 'cause the guy's already back behind bars -- and as for his attacker ... likely no one you might know.

The California Department of Corrections tells TMZ ... Sirhan Sirhan has been released from the hospital he was transported to and treated at, after being stabbed Friday, and is currently back at the Richard J. Donovan State Prison in San Diego. Home sweet home.

As for how he's doing ... we're told Sirhan is in "good condition." It's unclear where he was stabbed in the initial attack ... but it sounds like it wasn't life-threatening.

Now, regarding the man who assaulted him -- our law enforcement sources are staying pretty tight-lipped about who exactly it was. We have been able to confirm, though, that it was NOT any of the prominent inmates you'd probably recognize right away.

Those who've been ruled out as the assailant -- Suge Knight, both of the Menendez brothers, Jesse James Hollywood, and Tex Watson of the Manson Family.

There are other notable prisoners being housed at RJD, of course, but these guys are easily the most infamous, and our sources tell us it wasn't any of them. Like we told you, whoever did do it has been placed in isolation. No word on whether charges will be filed.

Sirhan killed RFK in 1968 during a campaign rally in L.A. -- he was running for President, and was seen as a highly-favored candidate in the Democratic Party after winning the California Primary. Sirhan fired off shots from a .22 caliber revolver moments after Kennedy's remarks.

Kanye West's Sunday Service is on the road again ... this time he took the choir to good ol' Watts, and none other than Brad Pitt showed up to feel the good vibes.

Brad was among the large group of worshipers who surrounded Kanye and his choir Sunday in the parking lot of a church. We're told it was a spur-of-the-moment deal, and Brad's presence was a surprise to almost everyone who showed up.

Maybe it shouldn't be going forward, 'cause our sources tell us this is his second time coming.

You can see Brad rockin' his signature charcoal-colored cap. We're told the actor was mostly unbothered by fans as he blended in with the crowd. Yes, Brad Pitt can blend in in Watts.

Other VIPs for this week's Sunday Service included L.A. Reid, Adrienne Bailon, Kourtney, Khloe, Kendall and radio personality Big Boy.

Meanwhile, Kanye was doing his usual thing ... jamming out with the choir and the band on hand in the middle of the group. It looks like there was singing, dancing and, of course, a sermon was given at one point ... the whole church experience, which Ye's been taking around the country lately.

Looks like Kanye's recent Sunday Service road trip is becoming the norm. Remember, he was just in Dayton, OH last week with Kim and his kids ... where he helped Dave Chappelle put on a free concert and service for the grief-stricken community.

Nina Dobrev had two things on her mind while splashing around with her new(ish) boyfriend in the SoCal waters -- shoulder rides, and launch angles.

The former 'Vampire Diaries' star hit the beach Saturday with her man, Grant Mellon, where they got in lots of PDA, both in and out of the ocean. Nina mounted Grant's shoulders at one point, almost like they were ramping up for a game of chicken.

Turns out, Nina was actually getting ready to have her beau launch her into the air ... where she would attempt a backflip, and then land safely in the waves. Classic beach trick.

When they were back on shore, Grant and Nina showed some more traditional affection ... sharing a kiss and embracing each other for love and tenderness.

The couple has reportedly been together since at least March of this year, possibly even earlier than that. They've been spotted out together a lot over summer, including a trip to Cannes.

BTW, Nina's in this new flick called "Lucky Day" -- which drops later this month. Fitting, 'cause that's gotta be what Grant's thinkin' all the time when he's with her. That's a safe bet.

Travis Scott has no ill will toward Cardi B for taking home the Grammy for Best Rap Album, despite what fans might think after watching his new documentary.

Travis' "Look Mom I Can Fly" project dropped on Netflix Wednesday, and there's a part when Travis is visibly upset after Cardi took home the trophy back in February. A lot of people who've seen it already thought Travis was angry at Cardi.

Sources close to Travis tell us it was absolutely NOT anything personal. We're told his emotions only surfaced because of all the hard work he put into his "Astroworld" album ... and he just really wanted to win, plain and simple.

Fact is, Travis and Cardi have always been super cool since then -- and her hubby, Offset, even showed up at the big Netflix premiere event for the documentary.

Cardi defended herself against some Travis fans on Twitter, saying, "I wasn’t even thinking of winning or even the Grammies. All I can think about was...everybody is disappointed in me, am I still going to have a career after this baby? Is this album going to make me or break me ? I need to finish before I start showing."

She continued, "So when I won a Grammy for it I didn’t have no words to say but when I went home I started reminiscing on what I went thru during that period I was like YEA BITCH YOU DESERVE THIS SHIT! And until this day my shit still charting."

Kanye West can sum up his feelings about bringing his Sunday Services to traditional churches in just 2 words -- far less than Justin Bieber used, but we think they're saying the same thing.

We got Ye Saturday night as he and his wifey, Kim Kardashian, were leaving Cafe Habana in Malibu ... and asked him if he felt any more pressure when performing in churches with his Sunday Service choir.

As you know, Kanye's had 2 special services in the last month -- leaving his usual outdoor location in Calabasas to perform for a North Hollywood congregation ... and the other in Dayton, OH for survivors of the mass shooting there.

Kanye's answer was short, sweet and a clear sign of his faith. As for feeling pressure ... he was getting plenty last night from one of his outspoken fans in the 'Bu.

We'd put that same question, about pressure, to Justin last week -- on the heels of him singing for the first time in front of the congregation at Churchome in Bev Hills. Biebs told us it was more nerve-racking than his stadium concerts.

The takeaway, though, is both of 'em are feeling the Spirit.