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DJ Quik has lawyered up against YG, Stampede Entertainment and Def Jam over what he's saying is his rightful claim to credit on YG's massive hit song, "My Hitta."

DJ Quik tells TMZ he was instrumental in creating the track, but was omitted from the credits and hasn't seen a dime. The West Coast rap legend went on a Twitter rant Sunday calling out YG and his management team.

The song came out in 2013 and and has since gone double platinum. While the track was produced by DJ Mustard, Quik claims he served as the track's engineer, and even contributed vocals.

He says he didn't complain for a long time because he was constantly strung along ... promised he'd get the credit.

He also wants his platinum plaques.

YG's since responded ...

Omarion passed on the Legos and Tonka truck for his son's 2nd birthday ... opting for an art piece that set the singer back $18k.

The R&B star hired artist Madsteez to do a surreal painting of his 2-year-old son, Megaa ... a gift he presented at his kid's Kidchella-themed b-day party over the weekend in Granada Hills.

We're told Omarion reached out to Madsteez four days ago to make the 36" x 36" acrylic and spray paint piece -- which took 2 days to create.

As for the party ... the kids performed on a mini-stage and played in a bunch of bounce houses. There was also plenty of face painting.

Not too shabby.

So many people are flocking to the gravesite where Muhammad Ali is buried, the cemetery has put up a temporary headstone to help guide fans to the right spot ... TMZ Sports has learned.

If you bleed Kobe Bryant ... or Michael Jordan ... or Mike Tyson ... or any sports legend, there's a tattoo artist in New Zealand who's become the go-to guy for hyper realistic tats of the biggest sports stars in the world.

With rumors swirling that he'll start training with Tom Brady, Randy Moss picked up the pigskin this weekend ... for a pickup beach game in St. Lucia.

Turns out, Moss is running BodyHoliday's WellFit Families fitness retreat in the Caribbean -- leading activities like beach football, rock climbing and archery.

While the NFL legend didn't exactly shine during the football game (there's a reason he didn't play QB in high school) ... he killed it with the bow and arrow.

We're told Randy also led the groups in bike rides, sailing courses, cooking classes and abseiling adventures down waterfalls.

Fantasy and sci-fi movie geeks are about blow serious wads of cash on memorabilia ... including Harry Potter's actual Hogwarts acceptance letter and an X-Wing (miniature) model used to shoot 'Empire Strikes Back.'

TMZ has learned that London's Prop Store is putting original props and costumes from iconic film franchises up for bidding next month. The 'Star Wars' and 'Potter' pieces are expected to fetch top dollar -- $80k to $105k for the X-wing model .. and $4,000 to $6,500 for the Hogwarts letter.

But there's a ton of other movie stuff available too:
- Scar Predator costume from "AVP: Alien vs. Predator"
- Mel Gibson's "Braveheart" sword
- Sloth's mask from "The Goonies"

Joel Osteen's associate pastor, John Gray, absolutely thinks the 2 flight attendants who went toe-to-toe with his wife would've handled things differently if she were white.

Rev. Gray -- a host on "The Preachers" -- and Aventer were on "TMZ Live" Friday trying to explain why she was singled out by the American Airlines crew when she attempted to switch seats with her nanny.

Check out the clip ... John stops just short of calling it straight up racism, but he clearly thinks Aventer was treated differently because of what she was wearing, and POSSIBLY because she's black.

We broke the story ... cops were called and Aventer was briefly removed from the flight. She was ultimately allowed back on, and the 2 flight attendants got booted.

"Love and Hip Hop: Atlanta" star Althea Eaton is a free woman again after spending just over a week behind bars.

Althea cruised out of an ATL jail Friday ... already rocking her heels and looking like she's ready for the weekend.

Althea was reportedly jailed after a restraining order hearing -- her estranged fiance, Benzino, was getting one against her, and she allegedly made contact with him after court. Major no-no ... and the judge locked her up for it.

Bella Thorne and Dane Cook looked like two peas in a pod hitting the town Wednesday night ... but we're told the hangout was strictly business.

Sources close to the pair tell TMZ ... Thorne, 18, and Cook, 44, are working on a new movie together and have been spending a lot of time together off-camera to bond. We're told the pics of them leaving the Improv are just that ... there's no type of relationship.

Thorne's been dating Gregg Sulkin for over a year and we're told things are just as good as ever between the two.

Case closed.

Usher's just the latest celeb to piss off drivers on NYC's 6th Ave ... only this time it was for the sake of ping-pong.

The R&B superstar obviously needs to work on his serve -- as you can see -- after getting into a quick match with jeweler to the stars Mr. Flawless ... who's made it a habit to block off the busy one-way street for photo shoots right outside his shop.

Usher proved to be a good sport though -- and apparently this publicity stunt hasn't gotten anybody busted ... at least not yet.

Check out the vid for yourself ... something tells us it won't be the last time you see Mr. Flawless getting honked at on 6th Ave.

File Under: EXTREME MEAT SWEATS!!

Here's New England Patriots defensive end Jabaal Sheard lining up in front of a 2 POUND monster steak Tuesday -- in what may have been the most delicious charity challenge of his career.

Sheard hit up Smokey Bones Bar & Fire Grill in Tyngsboro, Massachusetts (about an hour from Gillette Stadium) -- where owners offered to give $4,000 to charity if he could finish the whole thing!

We're told people in the restaurant were so pumped -- several customers added to the pot ... which totaled $5,200!

The good news? SHEARD CRUSHED IT ... devouring the entire Flintston chop in 50 minutes!

Ja Rule and Ashanti do not endorse killers, and they've changed the name of their tour ... just in case anyone's getting it twisted.

Ja tells TMZ ... he and Ashanti have decided to change the original tour name, Natural Born Killers, because they thought it would be "insensitive to the families of the victims" of senseless violence.

Ja reposted a promo for their 12-show tour with the word "Killers" crossed out. It's now called the Natural Born Tour.

Ja stressed to us ... they have a creative and First Amendment right to call the tour whatever they want, but made the change anyway.

The name's just for promotion purposes, since tickets to the show are being sold simply as Ja Rule & Ashanti.

Meek Mill in a strip club -- without Nicki Minaj by his side -- is a full party ... and an expensive one too.

The MC hit up ACES Strip Club Wednesday night in Queens, where he was hosting, and as you can see in the video ... Meek was throwing racks on racks on racks. We're told he dropped at least $20k.

He wasn't flying solo ... Meek was rolling with Travis Scott and NBA all-star James Harden.

Check out the clip -- night and day from another strip club trip WITH Nicki.

Tyrese wants to make it abundantly clear -- he was NOT calling out Jay Z, DJ Khaled and Future as hip-hop stars not doing enough for their community ... despite a post that seems that way.

The singer tells TMZ ... his IG post was about all people of color needing to step up and come together -- especially powerful men like Jay Z, who has the stage and voice to influence real change ... like going to Congress to change gun and drug laws.

Tyrese tells us he's going to reach out to Jay to come up with some kind of plan to help save black men from killing each other and winding up in jail.

Tyrese seemed to be pointing the finger at the trio after posting the pic Tuesday of the 3 rappers with a long caption calling 'em out for scheduling a music video -- Khaled's "I Got Keys" -- but not finding time to bridge the racial gap.

It should be noted other rappers -- T.I., Swizz Beatz, Rick Ross, 2 Chainz and Pusha T -- were part of the video, but not in the photo.

Beyonce didn't venture far for postcard-perfect shots of the Eiffel Tower ... she just stepped out on the balcony of her stupidly ballin' hotel suite.

We're told Bey holed up at the Shangri-La Hotel this past week when her Formation World Tour rolled through Paris. She got the hotel's signature top floor suite, naturally ... which typically goes for $19k a night.

The 1 bedroom suite is about 2,938 sq ft of living space ... 900 sq ft make up the balcony alone, which Bey, Jay Z and Blue Ivy made the most of, judging by their pics.

And remember ... this is a work trip for her.

Lydia Hearst's bachelorette party was a perfect fit for her last name -- no cheesy Vegas strip club, instead her turn up went down inside historic Hearst Castle.

Sources close to Lydia -- who's engaged to TV host Chris Hardwick -- say she took 18 friends to the San Simeon, CA landmark built by her great-grandfather ... newspaper magnate William Randolph Hearst.

Her guests included Cara Santana, Michelle Trachtenberg, Clare Grant (Seth Green's wife) and actress Jillian Murray. The ladies were treated to a 2-hour VIP tour ... complete with a swim session in the famed indoor Roman pool (usually off limits). The floaties were pre-approved.

We're told private events at Hearst Castle typically cost up to $22,000 ... but with the family discount Lydia's tab came to $0.00.

Perks of royalty.