Britney Spears is at the tail end of her 30-day stay at a mental health facility ... and we've learned more about how she landed there in the first place.

As we reported, Britney has had a rough time dealing with her dad's recent illness. Jamie and Britney are super close -- he's been her conservator for nearly a dozen years -- and his health battles have taken a big toll on her.

We're told at the same time, Britney's doctors were adjusting her meds which had lost their efficacy. Britney's mental health issues were stabilized with a cocktail of medicines that were designed specifically her. Over time, those meds were increasingly ineffective and doctors needed to create a new cocktail.

We're told there were problems. First, they had to wean Britney off the existing meds. This cannot be done quickly and there's a risk of suicide if it's not done right -- it's that serious.

As doctors weaned her off the meds, they created a new cocktail, but it's all trial and error, and there were errors that made Britney unstable and ultimately unwilling to cooperate with doctors.

She was admitted to the mental health facility and we're told doctors think they've now found the right mixture of drugs.

Britney got a day pass Sunday to spend time with her boyfriend, Sam Asghari, in Bev Hills. She went back to the facility the same day.

One other thing ... there have been reports the conservatorship has forced meds on Britney against her will. Not true. The conservatorship Britney is under does not permit the conservator to force drugs on the person for whom the conservatorship was created. 

On that note, there have also been reports Jamie Spears forced Britney into the mental health facility. The type of conservatorship Britney has -- through the probate court -- does not allow a conservator to force someone into a mental health facility. 

What's more, we're told Jamie is adamant -- he did not want his daughter to go to the facility because he thought it would leak out to the media and he felt there were better ways of solving her problems. We're told Britney is the one who said she wanted to go. 

Justin Bieber jumped the gun at Coachella when he said an album was coming soon ... 'cause TMZ's learned it's actually gonna be about another year before a full set of new tunes is ready.

Sources close to the situation tell TMZ ... the Biebs got caught up in the moment when he said "album coming soon" after wrapping up his Sunday night surprise performance with Ariana Grande. Yes, he has been working on new music, but that tease for a new album immediately cranked up fan anticipation.

Great marketing, for sure, on JB's part -- and while he HAS recorded a few songs already ... we're told he's still working on creating a new sound.

Of course, the bottom line is he actually IS recording ... and doing so when everything's coming up Justin. We're told he feels very centered, and he's excited about getting back in the studio grind.

Remember ... Bieber hasn't released a solo of his own for more than 3 years -- his "Purpose" album dropped way back in November 2015. He told the Coachella crowd he hadn't performed in like 2 years and seemed to have thoroughly enjoyed, his words, getting his groove back.

He was also recently featured in Lil Dicky's new single "Earth" -- the one where he plays a baboon. It was Justin's first collab since "No Brainer" was released last July.

Goes without saying ... Justin's new album is already highly anticipated.

Cops paid Wendy Williams a visit to check on her after a random caller alleged her husband, Kevin Hunter, was poisoning the talk show host.

According to the police report ... the outrageous call, made back in January, came from someone claiming to work for Williams' production company. The caller believed Kevin was slipping Wendy something harmful, and he or she wanted cops to check on her.

The report says 2 officers went to Williams' New Jersey residence and were greeted by Hunter, who was hesitant to let them in for the welfare check because he said Wendy was sick and recovering from a health problem.

Cops say they explained to Hunter they were required to speak with Williams due to the anonymous call. When he allowed them to enter, they found Williams in bed "with the blanket covering from neck to toe."

According to the report ... one of the officers asked Kevin to leave the bedroom so they could talk to Wendy alone, but he didn't want to leave her side. As for the health problem she had -- Wendy told cops she was recovering from a broken shoulder.

An officer eventually asked her if there was any truth to the anonymous tip she was being poisoned, and Wendy responded with something like ... "Well, I'm very popular." When the cop repeated the question, the report says she became tearful, but denied there was any truth to it.

The cops left after Wendy told them once more she was okay.

As we reported ... Williams filed for divorce from Hunter this month amid cheating rumors, and just weeks after she returned to her show and announced she was living in a sober home and getting treatment for addiction.

She was on hiatus from her show at the time cops performed that welfare check.

Kevin -- who was also an executive producer -- has now left the show in wake of the divorce filing.

Josh Brolin's dropping his evil villain persona and showing off his playful side to talk Thanos' ass cheeks, and a major no-no in his book -- "Avengers: Endgame" spoilers ... just don't do it!

Brolin, who plays Thanos was at LAX Monday when we asked him about pulling back the curtain on a nude shot of his incredibly ripped, incredibly villainous character.

If you haven't seen it yet, it's quite a sight to behold ...

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Before the armor, a shower. #washingavengerscumoff #powerliftingantmansquish #APRIL26SPOILER

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Brolin insists the photo's all him -- from the busting veins to the muscular booty -- but based on who he says is training him these days ... we think he MIGHT be joking.

Anyway, where were we? 

Oh yeah, much like the film's directors, Anthony and Joe Russo, Josh is urging moviegoers to keep their mouths shut after they see it ... so as not to spoil the end of 'Endgame.'

Brolin warns those even thinking about ruining it for others -- especially east coasters who get to see the movie first -- they better snap out of it ... or face the wrath of Thanos.

Why test him? Those glutes and hammies mean business!

"Avengers: Endgame" comes out everywhere Friday, but the big red carpet premiere went down in L.A. at the Convention Center Monday night ... and the celebs brought their A game.

One of the rarest pieces of Freddie Mercury memorabilia is now up for sale ... and it's the only set list personally written by the Queen frontman to ever hit the market.

Freddie's handwritten list of Queen hits from a 1978 concert in Copenhagen, Denmark, is going up for sale through the memorabilia company, Moments in Time -- and they're hawking this rock 'n roll treasure for a hefty price tag of $35,000. 

The 2-page set list from Queen's show used to belong to a private collector, but he or she's decided it's time to unload it. 

Sure, the price tag sounds steep -- because it is -- but trust us, there's good content in here that's worth your hard-earned money. Freddie scribbled down the names of some of Queen's biggest hits, including "We Will Rock You," "Tie Your Mother Down" and "Bohemian Rhapsody." 

Of course, the set list also comes with a letter of authenticity from the official Queen fan club. 

It's funny ... the final note written at the bottom of the setlist reads, "Hotel!!" Guess Freddie was looking forward to tucking in -- or, more likely, partying like a rock star -- after the show. 

6:43 PM PT -- A suspect is now in custody. Deborah Sue Culwell, a 54-year-old resident of Coachella, was arrested Monday around 5:30 PM PT.

Authorities are about to nab the woman caught on video throwing a bag of puppies into a dumpster in the city of Coachella ... TMZ has learned.

The Riverside County Animal Services has ID'd the woman and the agency says an arrest is imminent. We're told she'll face 7 felony counts of animal cruelty. 

As we reported ... the woman was caught on video last week pulling up in a white Jeep Wrangler. She was seen carrying a bag of what turned out to be seven 3-day-old puppies ... which she then dumped into a trash bin. The puppies damn near died were it not for a Good Samaritan.

As you know ... it can get really hot in Coachella. It was in the mid-90s when the puppies were found. They were barely breathing when they were found by an individual rummaging through the trash bin. The puppies were taken to an Orange County shelter where they recovered.

If convicted on all counts, she faces up to 6 years behind bars. 

Originally Published -- 1:17 PM PT

Before this model made headlines for landing on the cover of a prominent magazine and forging her way into Forbes' 2017 list of the world's highest paid models, she had an incredibly tough upbringing while growing up in Lincoln, Nebraska.

She ultimately weathered that storm and was discovered at just the age of 12 while at a shopping mall. She soon appeared in ads and catalogs before making her way to NYC to pursue a career in modeling. 

The insanely successful model nearly quit when she was 18 but her mom encouraged her to keep going, and it proved to be a great decision cause years later she would walk the runway at Paris Fashion Week and well on her way to cementing her role as a supermodel. 

Can you guess who she is?

The Internet-famous Easter Bunny vigilante says he sprung into action without thinking twice about the fact he was rocking a furry suit ... because he'd spotted a damsel in distress.

The hero-bunny is Antoine McDonald and he tells TMZ ... he saw a guy spit on a woman Sunday outside the Underground Public House bar in downtown Orlando. Antoine says he saw it from across the street and quickly ran over to help her.

It all happened so fast, Antoine says he didn't even have time to unzip his suit or even bother to look for cars as he scrambled to get across the street and to the woman's defense. The video of him -- fully furred out -- going HAM has, naturally, gone viral. When's the last time you saw an Easter bunny open a can of whoop-ass??

The video of Antoine breaking down the brawl is almost as entertaining as the fight itself. Our fave parts? When the boxing bunny went from throwing haymakers to shadow boxing ... much to the crowd's delight.

Also, you gotta see Antoine revealing what cops told him immediately after they broke up the fight. Amazingly, nobody got arrested.

Florida, man.