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Charlie Sheen’s pornstar fiancée has a thing for Robert De Niro ... so Charlie’s inviting him over for a smoking hot group session ... in his home photo booth.

Charlie just gushed over De Niro’s movie “Last Vegas” on Twitter ... and revealed he bought a photo booth used in the film -- probably because his bride-to-be Brett Rossi is Bobby D's "biggest fan."

Now, in a move only Charlie Sheen could pull off -- he's SERIOUSLY asking De Niro to drop by his house to take a few selfies with Brett in the booth.

It's a pretty decent proposal ... considering De Niro's done worse.

Michael Lohan's girlfriend claims he's threatening her with a knife and threatening to take their infant son -- and now police are on scene ... TMZ has learned.

Kate Major blasted Lohan on Twitter Monday evening ... claiming she had to lock herself and their one-year-old son Landon in a bedroom while a knife-wielding Lohan tried to break down the door.

Threatening to take our son. What judge would rule for. him??? Stuck inside a house with this guy? He has a knife

— Kate Major (@k8major) February 18, 2014

Sources close to the couple tell us Michael is the one who called 911 when Kate started acting erratically ... and locked herself in the room.

We're told officers want one of them to leave the house immediately -- but Michael isn't budging because he thinks Kate is drunk ... and doesn't want to leave her with the baby.

We just spoke to Michael who claims Kate's been drinking again ... and it got so bad she tried to kill herself over the weekend. Lohan tells us he's worried about the welfare of their child and says he'll attempt to get custody of their son if she doesn't get help.

During Kate's twitter rant ... she addressed the suicide saying, "Someone trying to kill u is worse than trying to kill yourself ! #udontscareme."

Kate also vowed to never let Michael take their son away from her.

Simon Cowell has a male in his life that is actually showing more chest than him -- and his name is Eric.

It's a pretty shocking sight for a man who by all accounts has avoided parenthood for 54 years.

Simon boasted how handsome his son is, adding, "I never knew how much love and pride I would feel."

Simon, Lauren Silverman and 2-day-old Eric posed for the pic in the NYC hospital where the kid was born.

So how do you feel today ... looking at a 2-day-old kid who will never have to work a day in his life?

Drake has no business attacking Rolling Stone or Philip Seymour Hoffman because the magazine gave him advance notice it was dropping him from the cover in favor of PSH.

Sources close to Drake tell TMZ the rapper feels like he was "tricked" because ... "He only did the interview if he was going to be on the cover."

But we've learned Drake was interviewed on January 28, and the photo shoot was also completed before PSH died on Feb. 2.

A rep for RS says this happens all the time when musicians and actors die -- most recently when Lou Reed and Whitney Houston passed away.

Further, sources tell us Drake's camp was told last Friday he wouldn't be on the cover when the mag was released Wednesday. The RS rep would not say if they offered Drake a future cover.

If Aaron Paul wants us to believe he didn't care if everyone knew his name when he walked into the Cheers bar in Boston ... he's full of Schlitz.

Aaron and a pal popped into the famous drinking hole Wednesday to grab a couple of beers ... but everyone was so impressed they probably would have broken out the meth stash if he wanted.

Aaron -- looking a lot like Jesse Pinkman -- took pics with fans and the staff ... whose troubles are all the same.

Drake just spit on Philip Seymour Hoffman's grave ... throwing a bitch fit over losing the Rolling Stone cover to the dead actor.

Drake's hissy sesh started with a complaint about being misquoted in the latest issue regarding Kanye West's album -- but then he quickly lashes out at the mag for making a switch.

Minutes later, Drake went back to Twitter and said, "RIP to Philip Seymour Hoffman. All respect due. But the press is evil."

Terrell Owens' estranged wife was hospitalized this weekend after an apparent suicide attempt ... sources connected to the situation tell TMZ Sports.

Just days after Rachel Snider left T.O. and moved back to Texas, she was hospitalized for what she described on Twitter as "suffering from a broken heart."

Now, we're told ... Snider's condition was actually very serious and she's been in the hospital ever since. So far, no specifics on her condition or the nature of her injuries.

We broke the story ... Snider left Owens just two weeks after they tied the knot, claiming Owens was only using her for money. T.O. denied the financial allegations but says he wants out of the marriage just as bad as she does.

Richie Incognito says Jonathan Martin contemplated suicide back in May because he wasn't playing well ... and Richie just told the world on Twitter.

After weeks of silence, Incognito just WENT OFF on Martin ... saying "the truth will bury you and your entire camp."

But then Richie dropped the bombshell ... "FACT: Jonathan Martin told me he thought about taking his own life in MAY 2013 b/c he wasn't playing well. Told me he felt worthless."

The timing of Incognito's rant is interesting ... considering the man the Miami Dolphins appointed to investigate the alleged "bullying" situation is expected to release his report in the very near future.

CHEERS! Selena Gomez wants her fans to know she appreciates all the support she received during her rehab stint -- where she went for alcohol abuse -- and she's showing her love ... with a glass of wine.

TMZ broke the story ... Gomez bailed early on rehab -- where she also sought treatment for pot and Rx Ambien -- just 14 days into a 6-week program ... in order to attend the Sundance Film Festival.

Much to the rehab facility's dismay, Selena decided not to return to treatment because -- as she told her people -- she felt as though she was cured.

Now she's thanking her fans for all their love on Instagram -- with the most ironic photo ever -- writing, "I've done everything I could to the best of my ability. Thank you for the unconditional love and cyber hugs. You inspire me."

The pic -- showing Selena holding a glass of wine of all things -- was snapped about 6 months ago while she was on a boat, so it's not like she's fallen off the wagon ... it's just a hilarious picture to post given the circumstances.

Chris Kattan expects that you can drive your car on the freeway, crash into a parked vehicle, come close to killing someone, get arrested for driving under the influence -- but it's reprehensible for reporters to call him out on it.

Chris just tweeted, "If you don't have something nice to say, don't say it at all."

Kattan explains his arrest this way: "I just got back from a 15 hour flight after touring out of the country. I was exhausted. The police were so kind. I'm lucky nobody was hurt."

Our law enforcement sources say ... Kattan confessed to cops he was on Rx meds while driving erratically on the 101 Freeway, before striking a Dept. of Transportation vehicle that was inside a coned area.

Kattan also says he "passed all the tests" -- an odd comment, because he flunked the field sobriety test in spectacular fashion.

We'll stop on this one ... hard to find something nice to say about it.

George Zimmerman will not be going toe-to-toe with DMX in a celebrity boxing event ... and the promoter says it's because his conscience finally kicked in.

The promoter for the event took to Twitter Saturday afternoon to officially cancel the event ... and said he finally realized there's "more to life then money."

The promoter adds, "Just looked at my son and daughter today wow I'm so lucky those people must be in so much pain ... all you people are right."

Unclear exactly what he meant by "those people" ... but probably a poor choice of words.

Well that was fast ... Charlie Sheen is threatening to destroy Ashton Kutcher -- just hours after making peace with his "Two and a Half Men" replacement.

As we reported ... Kutcher called out Charlie on "Jimmy Kimmel Live" Thursday night for belittling him on Twitter, telling him to "shut the f**k up." Sheen got the point, and made a public apology.

But Sheen tells us ... when he did his mea culpa he hadn't watched the Kimmel interview. When Charlie got around to watching it he immediately blasted Kutcher, tweeting, "Dood, you ever tell me to shut the F*** up, EVER again, and I'll put you on a hospital food diet for a year."

Charlie tells TMZ he has a warning for Ashton ... "Mind your tongue, junior."

Charlie Sheen got Ashton Kutcher's message loud and clear ... apologizing to Ashton for riding his ass so hard the last few years -- and promising to shut the hell up from here out.

Ashton called Charlie out last night on "Jimmy Kimmel Live," blasting Charlie for constantly berating him on Twitter after Ashton replaced him on "Two and a Half Men." For example, just last month, Charlie tweeted Ashton, "Quit barfing on my old brilliant show."

Ashton turned to the camera and said, "Dude, shut the f**k up! Enough already. It's three years later and you're still blowing me up on Twitter. Come on dude, really?"

And Charlie listened ... apologizing this morning for taking his bitterness toward "Men" creator Chuck Lorre out on Ashton. He tweeted, "Ashton, message received. so sorry, u sounded like me! well done! my bad I was pissed at other crap & took it out on you. hope u r good xox c."

And just like that. Beef over.

Chris Brown made a little pit stop on his way back to rehab Sunday -- after visiting his lawyer -- he dropped by Trey Songz' blowout Super Bowl party ... filled with girls and booze ... and it's possible the shindig could land Chris in some hot water.

Brown was given a pass out of rehab Sunday specifically to meet with his attorney, Mark Geragos, for the singer's court hearing the next day.

After the meeting, Chris decided it would be fun to enjoy a few Super Bowl moments with his pal Trey Songz. There was nothing in the rehab pass indicating partying with chicks and booze was ok.

Sources close to Chris tell TMZ, he was only there for around 10 minutes ... and only because he thought the party was for charity. We can't help but call BS. There's no evidence there was any fundraising going on, and even if there was ... it's irrelevant.

Our Chris sources say he didn't drink and was monitored by a rehab worker at the party.

Calls to Chris' reps weren't returned.

Here's Team USA downhill skier Julia Mancuso trying to get America hooked on crack ... and it's working.

The 29-year-old Olympian -- who chalked up a gold medal at the 2006 Olympics in Turin -- threw on one of the lowest plunging catsuits ever for a sexy photo shoot for February edition of GQ.

Mancuso is considered America's best hope for Olympic gold in the speed events -- and she doesn't lack confidence. In fact, she brags on her Twitter page, "I ski better than you."

Hope she's right ...

Ke$ha's music producer Dr. Luke is in serious danger, according to the LAPD, after some of the singer's fans went nuclear -- blaming Luke for her eating disorder.

LAPD's Threat Management Unit filed legal docs -- obtained by TMZ -- asking for a search warrant to hunt down the identity of people who are threatening Luke's life on Twitter.

The vengeful tweets started after TMZ ran a story that Ke$ha entered rehab for an eating disorder because Luke taunted her about her weight. Ke$ha's friend told us ... Luke told her she "looks like a f**king refrigerator."

In the search warrant docs, cops point out some of the tweets, including:

-- "You need to be worried because IMA slit your throat before January is over."
-- "You ugly fat ass bum bitch. Im gonna carve u like a pumpkin with a long sharp knife."
-- "Im gonna gut you like a fish then skin you and glue ur wrinkly raisin skin to a fridge!"
-- "I'm gonna slit your F**KIN throat open then gouge your eyeballs out."