UFC

COOL -- UFC star Alan Jouban got to make out with Gigi Hadid for a Versace commercial.

COOLER -- His wife LOVED IT!

UFC star Julianna Pena just RIPPED into Ronda Rousey -- saying, "No one cares about [her] and her fat arms anymore."

"She's like the emperor in no clothes," Pena added ... "She's broken a little bit."

So, what set Pena off?

We asked her about Amanda Nunes saying she would gladly fight her ... if she couldn't book Ronda. And while Pena says she understands from a business perspective, she thinks Ronda's days as the top dog in UFC are over.

As for Ronda's long-awaited return, Pena says she's heard rumblings that RR will fight again before the end of the year ... but adds, "I'll believe it when I see it."

Until then, Pena says it's only a matter of time until she crushes Nunes and takes the belt.

"They can delay me but they can't deny me."

It's probably in Vin Diesel's best interest to squash the beef with The Rock asap -- 'cause Dwayne Johnson would whoop that ass if things came to blows ... so says UFC champ Tyron Woodley.

Woodley (who's also an actor) says he recently went to the "Fast 8" set -- and says he thought things seemed peaceful ... though Rock wasn't there at the time.

But that was then ... before Rock called out Diesel as an unprofessional "candy ass" on social media.

THE NATURE BOY IS PISSED!!!!

Ric Flair is firing back at Conor McGregor ... blasting the UFC star after McGregor proclaimed that most WWE wrestler are "messed up p**sies."

Conor McGregor just UNLOADED on the WWE -- saying most of the pro wrestlers are "p**sies" -- and blasted Brock Lesnar as a juiced up cheater.

McGregor was on a conference call to promote UFC 202 when he was asked if he'd ever consider doing a stint in the WWE ... and that's when he went off.

"I haven't really thought about it," McGregor said ... "For the most part, those WWE guys are p**sies."

"They're messed up p**sies if you ask me."

McGregor said there are some people he respects over there -- including the McMahons, Triple H and The Rock.

But when asked about Brock Lesnar ... he fired even more shots.

Conor McGregor says Nate Diaz will NOT make it to the 3rd round of their rematch ... predicting a 2ND ROUND K.O. at UFC 202.

McGregor was answering questions on the UFC 202 media conference call Friday -- when he admitted that he underestimated Nate's chin and toughness the first time around ... but he won't make that mistake again.

"He weathered the storm," Conor said ... "I'm just gonna be a lot more prepared for a man that can stay in there with me."

That being said ... Conor said confidently -- "I will K.O. him inside the 2nd round."

Luke Rockhold says the UFC needs to do something drastic to end the cheating -- telling TMZ Sports, "I'm just tired of talking about it over and over again and nothing happens."

Rockhold says people have short memories when it comes to cheating in MMA -- and said Anderson Silva is the perfect example.

"Everyone is gonna beat down Jon Jones ... and they're gonna cheer Anderson Silva after coming back from testing positive."

FYI, Silva received a 1 year suspension last year after testing positive for a PED at UFC 183.

So, what's the solution?

"They need to implement the full 2 year ban at least. 4 years would really scare a person because it would take away a career."

UFC champ Tyron Woodley watched the TMZ Sports video of Nick Diaz going off about a possible fight for the belt -- and says one thing is clear to him ... Nick's an idiot.

Woodley joined the guys on the "TMZ Sports" TV show (airs Monday night on FS1) and clapped back at Diaz ... saying he was trying to COMPLIMENT the guy as a great fighter to set up a big money fight.

But Woodley says Diaz took the message the wrong way -- "He made no sense."

"It just shows you his I.Q. outside of fighting is not extremely high."

Woodley says Diaz may have blown his shot at the title -- and hinted that he's closer to locking up a fight with Georges St-Pierre.

There's A LOT more in the full interview tonight on FS1.

Nick Diaz is FIRED UP -- telling TMZ Sports he's still the BEST FIGHTER in his weight class ... and he's down to fight Tyron Woodley ... or ANYONE the UFC throws at him, if the price is right.

Woodley called Diaz out after he beat Robbie Lawler at UFC 201 this weekend -- and now that Diaz finished his suspension and can fight again ... Nick says he's ready to take on the world.

"I want to fight the best guy. I always want to fight the best guy. The thing is I'm on top ... I'm the one on top ... they're dropping MY name."

"I don’t need no fake ass piece of plastic. F*** that! I made PPV without a title. I don't need that fake ass plastic to be somebody."

For what it's worth, we're told the UFC is gunning to get Diaz a fight quickly -- but we're told the name being thrown around is Robbie Lawler.

He breaks up fights in the Octagon, but UFC ref Herb Dean says there's no way in hell he's breaking up fights in the street!

Dean -- considered by many to be the best ref in MMA -- was at LAX when we asked if he's ever seen a real-life brawl and felt compelled to get involved.

The short answer -- HELL NO.

"If I see a fight in real life, I'm running in the other direction," Dean said.

"I've walked by street fights ... and somebody watching will recognize me and say, 'Hey Herb' ... I'm like, 'I'm a professional, this is amateur!'"

UFC fighter Alan Jouban thinks the time is now for Ronda Rousey to return to the Octagon ... saying she dominated the sport like no other female fighter ... and he can't wait for her return.

We got Jouban out in L.A. and asked him what's up with the one-and-done championship runs in the women's bantamweight division since Ronda lost to Holly Holm?

Jouban told our guy the short reigns have less to do with the new fighters ... and more to do with the old one ... saying Rousey was so DOMINANT it made the division look weaker than it really was.

Guy's got a point ... the title has changed hands like three times since Ronda was holding it down ... and now that we know she doesn't have a baby on board ... we're wondering when she'll get another crack at it.

The UFC is cracking down on PED usage in a way boxing DESPERATELY needs ... that's according to former boxing World Champ Paulie Malignaggi ... who says it's HIS sport that needs a scrubbing.

We got Paulie -- the former junior welterweight and welterweight champ of the world -- in NY training for his big Showtime PPV fight against Gabriel Bracero on Saturday and asked him about recent drug scandals in combat sports.

A fair share of those have gone down in the UFC ... where high-profile guys, like Brock Lesnar and Jon Jones, have been popped just recently for doping.

Paulie's been a vocal critic of PED use in boxing for a long time ... but given recent history it's still interesting to hear him say that it's HIS sport ... and not the UFC ... that has the real problem.

UFC superstar Nate Diaz just FaceTimed into the "TMZ Sports" TV show -- and told us he's on the way to his hometown Stockton, CA ... to get ready for the McGregor fight with "the best training in the world."

Diaz says he's been working out in L.A. -- but now, he's kicking the training into high gear -- "I'm going home now where I got all my good s*** at."

Straight from the champ's mouth ... Amanda Nunes says she wants to get in the Octagon with Ronda Rousey as soon as possible -- if Ronda actually fights again.

Nunes -- who just beat Miesha Tate to win the Women's bantamweight title -- was doing a media event for UFC 201 and was asked who she would pick for her first title defense.

Nunes didn't hesitate -- "Ronda Rousey" ... but only IF the UFC legend decides to fight again.

Nunes says it's important for her to square off with Ronda "to prove to everybody one more time I deserve to be here."

It's a good problem to have ... but Dana White says family members are coming out of the woodwork with their hands out after the UFC sold for $4 BILLION ... so he's ignoring their calls!

White was on 'Kimmel' Thursday night -- and was asked how his life has changed now that he's insanely rich (Jimmy estimates he made $360 mil off the deal).

We're guessing Dana was joking about the family -- but says he had a real Howard Hughes moment and locked himself in a hotel room after the deal closed.

Ronda Rousey is NOT with child ... despite rumors perpetuated by rival UFC fighter Cris "Cyborg" Justino, so says UFC prez Dana White.

Early Thursday, Cyborg went to Twitter and wrote, "I keep hearing the rumor @RondaRousey is expecting and no longer fighting #ufc205 if true congrats on the new life."

Ronda has previously talked about having children with her boyfriend, Travis Browne -- but never gave a time frame.

We spoke with White ... who tells us he talked with Ronda on the phone after the Cyborg tweet and she assured him it just ain't true.

Still no word on when she's expected to get back in the Octagon.