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Ariana Grande was quick to tweet and delete "Trash" after Mac Miller lost the Grammy for Rap Album of the Year ... what she felt was a sign of total disrespect from the award show to the late rapper and his family.

Miller -- who died in September -- received the first nomination of his career for Sunday's show for his album "Swimming." Mac was up against Travis Scott, Nipsey Hussle, Pusha T and Cardi.

Grande tweeted "Trash" after Cardi was announced the winner but clarified the shade wasn't at Cardi, saying, "Nothing to do w her. good for her. i promise. i'm sorry."

A source close to Ariana tells us she was upset because the Grammys flew Mac's parents out for the show -- a sign he was likely going to win -- and felt they disrespected him by giving it to someone else.

As we reported ... Ariana was supposed to perform at the show but later canceled the gig after a feud with Grammy honchos. She wanted was to perform "7 rings."

We're told the show's producer, Ken Ehrlich, told Ariana that song wouldn't connect with the audience, so he asked her to choose a different song. Ariana felt strongly "7 Rings" was what people wanted to hear, and when Ehrlich wouldn't budge, she said she'd take a pass.

Chrissy Teigen and John Legend don't seem to be holding out much hope Alexandria Ocasio-Cortez will chow down on pizza with them on Grammys night.

John and Crissy were on their way into Spago Saturday night in Bev Hills, when our photog asked about their overture to AOC ... where the Mayor of Twitter said, "hello my hero, do you wanna come over and watch the grammys with us? there will be pizza."

AOC responded and didn't say no, tweeting back, "yes! we can live-tweet me burning something in the kitchen."

Ariana Grande says the guy who runs the Grammys is a liar for claiming she was just too frazzled to pull it together and perform on Sunday night's show ... she says it all fell apart because he utterly disrespected her.

Ariana has been promoted everywhere as one of the highlights of the show -- on TV commercials, a billboard on Hollywood Blvd., buses, and on and on. Yet, sources connected to the Grammys show tell us, Ariana never made a deal to show up or perform.

The deal she wanted was to perform her massive, #1 hit, "7 rings." We're told the show's producer, Ken Ehrlich, told Ariana that song wouldn't connect with the audience, so he asked her to choose a different song. Ariana felt strongly "7 Rings" was what people wanted to hear, and when Ehrlich wouldn't budge, she said she'd take a pass.

Fast-forward to Thursday, when Ehrlich gave an interview to AP, saying Ariana backed out because she "felt it was too late for her to pull something together."

We're told Ariana is enraged, because she actually continued to talk to the Grammys and offered to perform a song Ehrlich wanted, as long as she could sing "7 Rings," but he still wouldn't budge. She then said sayonara and, days later, Ehrlich came back and said fine, do a medley that includes "7 Rings" ... but by then, Ariana was done with him. In other words, we're told she feels like Ehrlich is lying because he knows he made a mistake and is looking for cover.

As for why she thinks he made a mistake ... "thank u, next" the album drops Friday, and it's expected to be the best-selling album so far this year, and for Ariana not to appear on the TV show will look ridiculous.

CeeLo Green says he should have chosen his words A LOT more carefully when he threw major shade at NFL boycotters ... in defense of his friend Big Boi.

CeeLo was on "TMZ Live" Monday, explaining a since-deleted tweet he fired off after Big Boi and Travis Scott performed in the Super Bowl Halftime show. He'd said, "@BigBoi yo big we riding wit you fam DO THAT SHIT! F**k these so called protesters you just got 100m worth of press. I'll kill for you."

Despite those extremely harsh words, CeeLo told us he meant no harm and was more trying to support his friend, than take a shot at Colin Kaepernick's supporters.

As you know, Adam Levine and Maroon 5, along with their guest stars, took a lot of flak from people boycotting the NFL. CeeLo says he was watching the Halftime Show when his emotions got the best of him.

Still, he faced huge blowback from people who were offended at the "so called protesters" remark. There were other artists -- most notably Jay-Z and Rihanna -- who turned down the SB gig to stand with Kap.

2/3 -- Trump just gave some insight into his golf game with Tiger and Jack went. According to DT ... it was "Great!" Sounds like Tiger hasn't lost a step either.

Trump says Jack had a solid outing as well.

President Trump was in good company on the links Saturday morning ... escaping the D.C. cold at his private Florida golf course with the 2 best golfers on the planet -- Tiger Woods and Jack Nicklaus.

POTUS tweeted a pic of the trio at the Trump National Golf Club in Jupiter ... saying it was a "great morning" with the 2 golf legends.

Trump and Woods are no strangers on the golf course ... they also played together in Jupiter with Dustin Johnson in November 2017.

Trump has golfed with a bunch of celebrities in the past ... but considering the Golden Bear and Tiger combine for 32 major championships ... it doesn't get much better than this.

Kyle Richards is not down with Lisa Vanderpump calling her a bitch ... and now she's trying like hell to turn down the heat between them by clarifying her "Lisa drama" comment.

The 'RHOBH' star says she misunderstood a pap's question when, at first, she was reminded Lisa wasn't at Andy Cohen's baby shower before being asked if there was any drama. As we reported ... Kyle said there was drama and insinuated Lisa's absence might be her holding out to get paid.

As you know ... Lisa clapped back calling BS and, while holding one of her dogs, referred to Kyle -- and other Housewives -- as bitches. Well, Kyle's now firing back, saying, "It would be interesting to see how people would react if I called HER a bitch."

Kyle then clarified ... "When I was asked if there was drama at Andy’s shower I thought they were referring to something that happened AT the shower. Nothing to do with Lisa."

As for whether Lisa was holding out for money, Kyle says, "THEY asked if Lisa was holding out for money to attend the shower. OBVIOUSLY that is not true. I thought that was obvious so I joked."

James Woods shocked us big time ... a day after tweeting Rep. Alexandria Ocasio-Cortez is the most dangerous person in America, he told us he has mad respect for her.

We got the super conservative actor Friday night in WeHo at Dan Tana's, and we thought he was going to double down on his comments that AOC was so powerful she cannot be ignored ... and, he said, "Ignore her at your peril."

Yet, he told our photog how impressive he thinks she is ... a bartender becoming a leader in Congress has to be admired.

Rae Sremmurd is no more ... at least that's what one half of the hip-hop duo's suggesting.

Slim Jxmmi dropped some disheartening Twitter bombs on fans of the "Black Beatles" rappers Saturday morning, including 3 he later deleted implying he's parting ways with his brother, Swae Lee.

One said, "Y'all won it's a wrap," while another was even more telling, with Slim saying ... "I'm not Rae Sremmurd I'm slim jxmmi and ima sink or swim by myself."

Jxm also boasted he'd bought his mom a home off the money he made from his own work ... which is a tweet he actually left up.

The 2 have both done recent solo work but confirmed they have a new album coming out in early 2019 ... called "SremmLife4."

This isn't the first time there have been rumors of a breakup, but they've denied them in the past and maintained all was well between the siblings. It seems like it could be different this time.

Interesting note -- the last time we heard from the rappers was last week when they were in New Zealand, but only Jxmmi was seen ... getting involved in a bloody street brawl.

Kendall Jenner is hoping to connect with people and help them by sharing a very personal story about herself ... but it's a mystery what that is for now.

Kris Jenner announced Saturday her "brave and vulnerable" daughter will be revealing the story on Twitter Sunday night, "In order to make a positive impact for so many people and help foster a positive dialogue."

She also shared a video of Kendall alluding to the topic.

Kendall mentions it has something to do with her life when she was 14 years old, but at the time she didn't have the massive social media following she does now.

Flash forward to today, as a 22-year-old, Kendall has more than 100 million Instagram followers and 27 mil on Twitter. So, whatever message she wants to get out there ... she'll definitely have a huge audience.

Kris doesn't list a time to tune in to Kendall's story other than Sunday night, but adds ... "be prepared to be moved."

Ariana Grande is about that single life heading into the new year, and probably for the rest of her days ... according to her, anyway.

Ari responded to an article on Tuesday which speculated on who she's been seeing lately by hilariously tweeting, "can they tell me too?" She followed up with, "spoiler for the rest of this year / probably my life: it's no one. please refer back to this tweet for future questions."

It goes without saying ... AG's had it rough this year in the love department. She called off her engagement with 'SNL' star Pete Davidson ... and, of course, her ex, Mac Miller, tragically died of an accidental overdose from a mix of fentanyl and cocaine.

Ariana seems to be joking about the never dating again thing, but her point is coming through loud and clear ... her dating life shouldn't be the subject of such scrutiny in 2019.

Have you heard her new single yet? It's her ... she's single.

#thankunext

Donald Trump pretended to send well wishes to people who oppose him ... but let's be honest, it was aggressive and mean-spirited.

Trump wished Happy New Year 2019 to his haters and the "fake news media." He also made it clear ... the only people who would have an awesome 2019 were those who were not suffering from a fake disease -- Trump Derangement Syndrome.

Trump has been playing Kevin McCallister in "Home Alone" ... hunkering down in The White House over the holidays and complaining none of the Democratic leaders came to visit and break the deadlock that has shut down the federal government.

Trump's 2019 is about to get way more difficult, because Democrats take over the House of Representatives Thursday.

This is bonkers ... President Trump is using a brick wall the Obamas built outside of their D.C. rental home as justification for his own southern border wall. Seriously.

Trump tweeted out the strange logic Sunday, saying ... "President and Mrs. Obama built/has a ten foot Wall around their D.C. mansion/compound."

He went on to say, "I agree, totally necessary for their safety and security. The U.S. needs the same thing, slightly larger version!"

We broke the story ... construction got underway last year at Barack and Michelle's D.C.-area home -- which they're renting until Sasha graduates -- and a brick wall was being built to fortify the property ... where secret service has been assigned to protect the former First Family.

BTW ... the Obamas are also building an in-ground pool at the pad, as well as a terrace of some sort ... this according to building permits we've obtained.

With all that in mind, it should go without saying ... Trump's rationale makes zero sense here. Also, keep in mind ... the federal government has been partially shut down over this.

Demi Lovato broke her silence on the overdose that nearly killed her ... making it clear it was a near-death experience.

Demi went on social media to say she's "grateful to be alive," and is now sober and getting the help she needs.

She goes off on the media for making up crap about her to sell stories, saying, "If I feel like the world needs to know something, I will tell them MYSELF."

She goes on to say, "Someday I'll tell the world what exactly happened, why it happened and what my life is like today but until I'm ready to share that with people, please stop prying."

TMZ broke the story ... Demi almost died earlier this year after OD'ing at her Hollywood Hills home. She was hospitalized for 10 days before going to rehab for extensive treatment.

A New York State Senator just joined the ranks of disgusting Twitter trolls by telling a woman to kill herself ... because she ID'd him as the alleged culprit of a parking violation.

Sen. Kevin Parker, who represents NY's 21st District, nastily fired back at Candice Giove Tuesday after she accused him of misusing a parking placard. BTW -- Candice is the Deputy Communications Director of the NYS Senate.

Candice said she did some digging when a Twitter user complained that an "arrogant scofflaw" from the NY Senate was blocking a bike lane with his car ... claiming it was placard abuse.

Giove fingered Parker as the illegal parking perp, to which he replied ... "Kill yourself!"

Candice was incredulous by the Senator's comment, but of course ... he deleted the tweet and apologized shortly afterward. Parker wrote ... "I sincerely apologize. I used a poor choice of words. Suicide is a serious thing and and should not be made light of."

However, he's continuing to go after Giove, reportedly calling her an internet troll and tweeting that she's "on the wrong side of history for every important issue facing New York State!"

Colin Kroll, the CEO and co-founder of HQ Trivia, has died of an apparent drug overdose ... TMZ has learned.

Law enforcement sources tell TMZ, Kroll's girlfriend called police early Sunday and asked them to check up on him after she was unable to get in touch. Cops went to downtown Manhattan to do a welfare check, entered his apartment and found Kroll's body in his bedroom with drug paraphernalia nearby.

A police source tells TMZ at this point cops believe the drugs involved were cocaine and heroin.

Kroll was named CEO of HQ Trivia in 2018. He had previously been fired from Twitter after he was determined to be a "bad manager." Female employees claimed his behavior made them uncomfortable, however, no sexual harassment claims were ever filed.

HQ Trivia was having problems recently. It was steadily losing audience. In January, HQ was in the top 10 list of most downloaded iPhone games. It's now fluctuating between #250 and 500 in the U.S. Also, Kroll was dealing with an H.R. complaint by an HQ employee for his "aggressive management style."

Kroll was also the co-founder of Vine and was General Manager between 2013 and 2014. And, he was the Chief Technology Officer for Jetsetter. Prior to that, Kroll served as the Engineering Manager at Yahoo between 2007 to 2009.

Kroll was 34.

RIP

10:00 AM PT -- Ariana's ex, Pete Davidson, has jumped into the conversation, saying ... "Bravo Kanye West for standing up for yourself and speaking out against mental health. I can't explain to you enough how difficult and scary it is to be honest about stuff like this."

He adds ... "We need people like Kanye. No one should ever point fingers at you for your bravery in speaking about mental health. I'm seriously disgusted."

Before Pete posted his message, Ariana tweeted ... "last thing. stop weaponizing mental health. everyone."

Damn.

9:15 AM PT -- Ariana's replied to Kanye on Twitter, saying ... "with all due respect, i don't need to use anyone to promote anything. period." She adds it was just a joke comparing men and women, but did apologize for being insensitive and sent her well wishes to him.

Some fans were quick to say Ariana needs to retract her apology since she didn't owe him one ... to which she replied, "potentially triggering him? nah regardless of how i feel about a situation, i can also care about their mental health."

Kanye West is jumping all over Ariana Grande for making fun of his war with Drake and adversely affecting his mental illness.

Ariana did indeed make fun of the Kanye and Drake feud Friday, minimizing what Kanye says was a physical threat by Drake to him and his family. Ariana joked about "grown men arguing online," grousing it was taking attention away from her new single.

Ye fired back that he knew Ariana "said this to be cool and didn't mean no harm," but he still felt it was shading him. Fair point.

He goes on to say, "All of this foolishness weighed on my mental health so @arianagrande ..." In another post, he says, "No one would ever choose to end up in a mental hospital and diagnosed with a mental disorder but god chose me to publicly go through this journey and it is beautiful."

If we dare to interpret ... Kanye seems to be saying Ariana -- for whom he says he has love -- knows full well he's bipolar yet she jumped into the fray for pure self-promotion and in the process upset him.

It's interesting ... Kanye never called out Miley Cyrus. Ariana not only tweeted the guy fight was a distraction for the release of her single, but it also did the same for Miley. And, Miley was quick to respond by also making light of Kanye's fight with Drake. Yet Ye was silent on Miley.

We got Kanye in New York City Friday and asked him about the nature of the threat Drake leveled against him and his fam, but he was mum. We tried finding out from various Kim and Kanye sources all day long exactly what Drake said, but everyone is locked up tight as a drum.