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Well, Floyd Mayweather's definitely eating like he's not coming back ...

The boxing legend pigged out like a maniac during a stop at Archie's Burgers and Shakes in Manchester, England yesterday ... stuffing himself with unhealthy deliciousness.

There are reports Mayweather is interested in bringing the restaurant chain to the US -- possibly opening one in Las Vegas.

And get this ... they've even got a dessert named after his pal Justin Bieber.

Who's hungry?

DMX has come back from the dead ... performing at a NYC nightclub just days after cops found him unconscious ... not breathing and no pulse.

X took the stage for an hour Thursday night at Lively nightclub, looking strong and healthy.

TMZ broke the story ... DMX was found lying in the parking lot of a Ramada Inn Monday. Cops had to revive him. He denies it was an OD, but a witness told cops the rapper had ingested a white powder, and cops gave him Narcan, an antidote to narcotic ODs.

Lamar Odom couldn't have gotten on a cross-country flight without Kanye West's help, which is why Lamar was determined to get on a flight to NYC ... TMZ has learned.

Sources close to Lamar tell us when he was in Cedars-Sinai hospital ... Kanye religiously showed up to visit and frequently played rough cuts of his new music for Lamar. He started remembering specific lyrics, which was one of the early signs LO's condition was improving.

We're told Lamar is well aware of the role 'Ye's music played in his comeback.

He told Khloe how important it was for him to be at Thursday's show in NYC ... to show Kanye how much he "loves and supports" him.

Guess we know who'll be singing along when the T.L.O.P. tracks start blaring in MSG.

The Ronda Rousey comeback is officially in full swing -- 'cause the UFC superstar is finally back in the gym fighting again ... and we've got the pics!

It's the first time we've seen Ronda throwing punches and grappling since her crushing loss to Holly Holm back in November ... a sign her injuries are all healed up and she's ready to go.

Directly after the Holm fight, Rousey said her mouth and teeth suffered so much damage that she speculated, "It might be 3 to 6 months before I can eat an apple, let alone take an impact."

Well, here we are 3 months later ... and Rousey was back at the Glendale Fighting Club working out with her trainer Edmond Tarverdyan.

Ronda has previously told us she plans to fight Holly sometime this year -- though no date has been set.

Pamela Anderson officially passed the sex symbol torch to sons Brandon Lee and Dylan Lee at the Saint Laurent fashion show in Hollywood Wednesday night.

Pam and Tommy Lee's boys were solidly in the spotlight during the show at the Palladium ... mainly because 18-year-old Dylan (on the right) recently made his modeling debut in a campaign for Saint Laurent.

By the way, Pam's wearing heels and both of the boys are still towering over her. They grow up so fast.

And hot ... with the right genes.

Dakota and Elle Fanning looked like they were auditioning for a role in a remake of Stephen King's "The Shining" at Wednesday night's Saint Laurent fashion show in Hollywood.

It's a good pic, if only because they're rarely photographed together.

The sisters are separated by 4 years -- Dakota's 21 and Elle's 17 -- but who can tell under all that eyeliner?

Come to think about it ... a remake of "The Shining" would be totally awesome.

Gwyneth Paltrow defies 43 years on earth ... especially from the rear.

Gwyn basked in the sun during a photo shoot in Malibu -- a day after squaring off in court with her alleged stalker.

Here's Floyd Mayweather out in Milan ...rocking the insanely expensive diamond necklace he bought back in December -- while surrounded by his massive security team.

As we previously reported, Floyd bought the piece on a crazy end-of-the-year jewelry shopping spree -- dropping between $10 and $15 mil for the necklace and a matching diamond ring.

We're told the chain he's wearing in the pic is valued at $3 million -- and the watch is a special diamond Audemars Piguet time piece worth $1.3 million.

#ItsGoodToBeRich

Kris and Bruce Jenner have come a long way since their now-famous vacation with O.J. Simpson and Nicole Brown Simpson 2 months before the murders ... they're divorced, Bruce is now Caitlyn, Nicole is dead and O.J.'s in prison.

Kris and Caitlyn had a lot to talk about when they went out to dinner in NYC, as the second installment of 'The People v. O.J. Simpson' aired on TV.

Ben Stiller mugged for the cameras at their "Zoolander 2" premiere -- and by mugged we mean he and his son went full Blue Steel.

Stiller and his wife, Christine Taylor, made it a family affair with their kids Ella and Quinlin at the world premiere of "Zoolander 2" at Alice Tully Hall in New York Tuesday night.

The family stopped to pose on the purple carpet and Stiller's son grabbed the spotlight and flashed a perfect Blue Steel to the crowds.

Stiller's been on a tear promoting "Zoolander 2" in Milan at a department store and breaking a record for exposing his ultra-long stick.

Amber Rose and Blac Chyna are twinning in Trinidad where the Carnival celebrations are looking bigger than ever.

The ladies proudly displayed their assets while hosting one of the many parties going down on the Caribbean island.

We can tell you what the men of Trinidad are NOT giving up for Lent!

Disneyland is the most hungover place on Earth ... if Peyton Manning slammed as many Budweisers as he threatened to after Super Bowl 50.

Peyton and his 4-year-old twins Mosley and Marshall are in Anaheim right now, and hitched a ride with Mickey, Minnie and co. for a victory parade -- his last one at Disney if he decides to retire.

Manning's kids are loving this, but the Broncos QB clearly has only one thing on his mind: Where's the beer??

Hair o' the dog! (No offense, Pluto)

Hilary Duff and Mike Comrie are now officially divorced, but before the ink dried on the docs they hit the beach together in Hawaii with their kid.

As we reported, the divorce became final last week. They have joint custody of their 3-year-old son, Luca, and despite some hard feelings between Hilary and Mike when the divorce papers were filed, they are clearly working the whole co-parenting thing out.

Justin Bieber may have started a new holiday by pulling a late night recording session with his grandfather!

Biebs hit up a studio in Santa Monica on Wednesday with grandpa in tow. Justin's done stuff with gramps on social media, but this is the first time we've seen them hang together at work.

Here's a couple of the dynamic duo's greatest hits ... so far.

Even when Serena Williams loses on the court, her body still dominates off it -- exhibit A was spilling out of her shirt Wednesday night in L.A.

Serena hit up celeb hotspot The Nice Guy in a severely buttoned-down shirt ... showing off most of her black bra and a ton of cleavage.

While she might still be stinging from that Australian Open loss last weekend, this should help Serena's fans recover.

Zach Galifianakis' dramatic weight loss has gone next level ... even the guy's beard is thinning down!

The funnyman looked like a fraction of his Carlos-toting 'Hangover' character on his way into lunch Wednesday in Venice.

Zach's said he dropped the lbs through healthy eating and less boozing. Whatever he's doing looks wayyy better than any of the 'Hangover' sequels.

Especially #3.