Lupita Nyong'o $150K Pearl Oscar Dress ... STOLEN!!!!

Lupita Nyong'o's now-famous Oscar dress -- adorned in pearls -- was stolen right out of her hotel room ... TMZ has learned.

Law enforcement sources tell TMZ ... the dress was taken out of Lupita's room at The London West Hollywood. The dress is made of pearls ... 6,000 white Akoya pearls. It's valued at $150,000.

Our sources say Lupita told cops it was taken from her room sometime between 8 AM and 9 PM Wednesday ... while she was gone.

We're told there is security footage that cops are looking at that could catch the culprit right in the act.

12:00 PM PT -- Sheriff's deputies were at The London Thursday morning. We know they were in the manager's office and we're told they have looked at security footage to determine if they can ID the culprit.

Madonna Violently Yanked to Ground During Awards Show

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TAKING A TUMBLE

Madonna was horse collared and yanked off a riser onto a stage feet below ... all at the hands of a backup dancer.

The singer was performing Wednesday night at the Brit Awards in London, wearing an Armani cape with her back to the audience. The plan was for the backup dancer to dramatically pull the cape off of her as she revealed a sparkly outfit.

But before the pull Madonna was supposed to untie the cape strap around her neck. It was tied too tight and before it could be undone the backup dancer did his thing, pulling Madonna backwards neck first onto the stage.

She took a minute to collect herself and then went on performing.

It's the first time in 20 years Madonna performed at the Brit Awards.

Good bet it will take another 20 to get her back.

Kelly Osbourne Giuliana Better Make It Right With Zendaya ... Or I'll Quit!! [Update]

Kelly Osbourne just dropped an ultimatum on Giuliana Rancic and their "Fashion Police" bosses -- issue a mea culpa for saying Zendaya smells like a hippie pot smoker ... or she'll quit the show.

Kelly is responding to the firestorm Giuliana sparked with a comment about the Disney star's Oscar look -- which included new dreadlocks. Rancic said she thought Zendaya must smell like patchouli oil or weed. Kathy Griffin joined in on the "weed" comment.

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Kelly went off on a Twitter rant, saying ... "I'm giving everyone involved 24 hours to make it right or the world will hear how I really feel." She added she doesn't condone racism and is seriously questioning staying on the show.

Osbourne reminded fans she's friends with Zendaya -- who herself blasted Rancic for making such an "outrageously offensive" stereotypical comment.

It sounds like no one involved is buying Giuliana's claim her remarks "had NOTHING to do with race."

4:30 PM PT-- Looks like Kelly has pull ... Giuliana just apologized again -- this time on the air during "E! News."

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Kanye West I Ain't Saying Kim's a Gold Digger ... But the Black Thing Is Real

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Kanye West roasted his wife Kim Kardashian for her legendary love of the black man ... and brought the house down at the BET Honors.

Kanye was accepting the Visionary Award at the ceremony -- which was pre-taped, but aired Monday night -- and talked about how guys in Chicago barbershops talk about black men in entertainment hooking up with white women ... and white women nabbing rich black guys.

You gotta watch for the punch line because he absolutely nails Kim ... and then concludes, "It ain't got nothing to do with the money."

Ye also recalls a story Kim told him ... about her dad, Robert Kardashian, losing it when someone spray painted "ni**er lover" on his car -- and how he used it to teach Kim a lesson about racism.

Check it out ... it's Kanye at his funniest and most poignant.

Taylor Negron's Family Pissed Over Oscar Snub NPH's Junk Got More Air Time Than Him!

The Oscars focused more on Neil Patrick Harris' penis than a deceased actor who starred in iconic movies, and the actor's relatives are livid.

Taylor Negron -- who became famous for his roles in "Fast Times at Ridgemont High" and "The Last Boy Scout" -- was left out of the 'In Memoriam' tribute, which infuriated his brother Conrad Negron who said, "They'll have NPH come out in his underwear but not take a few seconds to honor my brother."

And Taylor's cousin Chuck Negron -- the lead singer of Three Dog Night -- says he was "floored" by the snub and demands some recognition from the Academy.

Conrad really went off, also saying, "They'll let Patricia Arquette go on and on forever but they won't give Taylor the 15 minutes he deserved." We're guessing he meant a few seconds.

Taylor died in January at 57 after a long battle with cancer.

Conrad says he and his family vow never to watch the Oscars again. After last night it's a safe bet ... they're not alone.

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'Imitation Game' Screenwriter 'I'm Not Gay' HOLY CRAP!

And you thought Michael Keaton not winning the Oscar was the biggest surprise ... the guy who won for Best Adapted Screenplay is not gay!

Graham Moore did an interview after the awards in which he said, "I'm not gay, but I've never talked publicly about depression before or any of that and that was so much of what the movie was about ..."

Fact is ... he never said in his acceptance speech he was gay, but everyone assumed it because the main character in the movie was gay and the torment he had to endure resulted in his suicide.

Moore said at the Oscars he had some connection to Alan Turing because both of them had issues fitting in growing up. He told BuzzFeed, "It was one of the things that drew me to Alan Turing so much, I think we all feel like weirdos for different reasons."

Moore spoke to reporters backstage and did not broach the topic of his sexuality ... even though a reporter tried to ask him about it ... without actually asking him.

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Irina Shayk I EAT LIKE A FATTY 4 Burgers In 1 Night

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File Under: "Yeah, right ..."

Smokin' hot swimsuit model Irina Shayk says she ate THREE burgers at the Vanity Fair post-Oscars party last year -- and this year, she was gunning for FOUR.

So ... you buyin' that?

BTW -- directly after making the statements, Irina went on the red carpet in her half-naked outfit and showed off the body that gorging on burgers built.

Yum.

Joan Rivers Oscar 'In Memoriam' Snub Melissa Is VERY Disappointed

Can we talk? Joan Rivers was noticeably snubbed Sunday night by The Academy Awards and Melissa Rivers is not a happy camper about it.

Sources close to Melissa say she feels her mom deserved a place in the 'In Memoriam' portion of the Oscars, but she's not going to focus on the snub.

We're told she'd rather focus on the overwhelming support from her fans, who have rallied behind her mom since her death in September.

But Melissa has a legitimate beef -- seems like the Academy forgot how Joan owned Oscar red carpets for years ... and her hysterical role as Dot Matrix in "Spaceballs!"

Serena & Common BACK TOGETHER?? Exes Hang at Post-Oscar Bash

You don't let just anyone hold your Oscar ... which is why it was very interesting when Common let his ex-GF Serena Williams carry his statue around last night ... fueling rumors they could be back on.

The two were spotted together at the Vanity Fair post-Oscars bash -- and even took a photo together (which Serena curiously posted and then removed from her Instagram page).

It's especially interesting ... considering that Common has been very open about how much he cared for Serena when they were together -- and even said he thought about marrying her.

So, back on???

Harrison Ford Screw the Oscars I'd Rather Watch Crappy Lakers

To quote the Grail Knight at the end of "Indiana Jones and the Last Crusade" ... Harrison Ford chose wisely.

Instead of suffering through the nearly 4 hours of whatever that was on TV last night, Harrison grabbed his wife Calista Flockhart and hit up the Staples Center to watch the crappy Lakers.

But unlike the Academy Awards, Harrison Ford got a surprise ending ... the last place Lake Show actually pulled out a victory over the almost equally bad Boston Celtics.

Still better than a running briefcase gag.

Irina Shayk Half-Naked & Rebounding ... At Post-Oscars Bash

Think Cristiano Ronaldo's kicking himself yet??

Here's recently single Sports Illustrated: Swimsuit Edition supermodel Irina Shayk ... showing off everything from her underboob to her side ass at the Vanity Fair party Sunday night in Hollywood.

The 29-year-old gave Ronaldo the boot last month after rumors began circulating that he was bangin' other chicks ... so she's very single and by the looks of things, very ready to mingle.

For the record, there were a ton of hot single dudes at the VF party -- including Orlando Bloom, Jared Leto and Common.

Happy rebounding.

Scarlett Johansson Idina Expect Travolta ... To Get So Touchy

Nobody felt as much at the Oscars as John Travolta -- just ask Scarlett Johansson ... who got up close with JT's hands even before Idina Menzel.

If you thought Travolta's overly touching moment on stage with Idina was strange -- and it definitely was -- imagine Scarlett's surprise on the red carpet.

John warmed up his hands pre-award show by sneaking up on Scarlett -- caressing her stomach and planting a kiss on her as she was posing for photogs.

You may question his tactics ... but the guy's got taste.

Oprah Winfrey Watch Me Do the Limbo At the Oscars

Oprah Winfrey took an awesome shortcut to press some flesh Sunday night ... much to the consternation of security.

Oprah ducked under the velvet rope as a security dude gritted his teeth, in clear fear O might go down. It's unclear where she was going, but she was definitely in a hurry.

Fun pics ... more fun than the Oscars for sure.

The Oscars Lego My Oscar And The Night's Biggest Winner Is ...

Oprah Winfrey won at the Academy Awards Sunday night ... scoring the Oscar everybody wanted ... the Lego variety.

She wasn't the only one ... during the performance of "Everything is Awesome" by Tegan and Sara and The Lonely Island, dancers dolled out Lego Oscars to stars like Oprah, Clint Eastwood, Meryl Streep, Bradley Cooper and Emma Stone, and others.

"The Lego Movie" may have been snubbed but they got their sweet revenge.

One thing's for sure ... those statues are awesome.

The Oscars Show Will Go On ... Roaches Dodge Health Inspectors

Oscars producers can stop holding their breath -- the Health Department combed the Dolby Theater for roaches and other violations, and gave 'em the green light for Sunday's ceremony ... TMZ has learned.

TMZ broke the story ... video shot inside the home of the Oscars showed several bars and a storage area that were filthy with dead cockroaches, flying bugs, dirty sinks, garbage and more.

Health Department Manager Charlene Contreras tells TMZ they sent 2 inspectors to the theater late Thursday afternoon -- hours after we posted the video -- to check the 6 bar areas. She says no roaches or flies turned up.

Contreras says the critters in the video may have set up camp in areas that are unused between events.

Bottom line ... celebs won't have to worry about crawling critters on Sunday. They're on their own with agents and lawyers though.