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Someone call security, there's a homeless woman sleeping in the Museum of Modern Art! Oh wait, that's just actress Tilda Swinton, who is there as part of a performance art piece.

The display is called, "The Maybe" ... as in maybe Tilda will be there, maybe she won't -- there's no advance warning for when she shows up for a snooze.

The Oscar-winning actress pulled the same stunt art in 1995.

Fun fact: You can catch a similar display of high art ... in a random alley of any major city.

Lindsay Lohan continued her weekend of partying before rehab ... hitting a club in Santa Monica last night with a few friends ... including her rumored new man, Avi Snow.

LiLo was there to watch Avi's band play. We're told she left around midnight (kinda early for her, no?).

As TMZ first reported, Lindsay spent her Friday night drinking inside a club in San Diego, where spies say she asked to be served vodka from carafes, instead of bottles, so she wouldn't be seen with alcohol bottles on her table.

In is unclear if Lindsay was drinking last night as well. In the pics she's drinking San Pellegrino.

Forget looking at photos trying to spot a ring or trying to decipher a cryptic tweet ... here's Liam Hemsworth spotted yesterday outside the Los Angeles home of his fiancée, Miley Cyrus.

Despite rumors of infidelity, hardly being seen together, and Miley's on-again/off-again engagement ring ... it seems this young couple is still going strong.

Citizens of Earth were on high alert this week after a vision from the heavens descended upon New York City ... the almighty Ryan Gosling.

With his immaculately disheveled locks, intellectually superior statement glasses, perfectly grown out face scruff, miraculously sexy vintage-looking graphic t-shirt exposed through his supernaturally matched hoodie & jacket combo, His Holiness -- who says he's punishing us mortals by taking a break from acting -- was spotted leaving a Manhattan hotel with what must be some sort of sacred text in hand.

Even nonbelievers are in luck, because the brooding celestial 32-year-old deity is here to save us all.

Amen.

It's official, Britney Spears has a new conservator boyfriend.

Rockin' her best corporate chic ensemble, the unchaperoned 31-year-old mother of two was spotted holding hands in public for the first time with new beau David Lucado at a mall in Thousand Oaks on Friday.

While they've been dating for weeks, this is their first real public display of affection since Brit Brit and 27-year-old David were spotted having dinner together on Valentine's Day.

As we told you ... David has no show biz ties. He's from Atlanta and is out here working for a law firm though not a lawyer. He's a dude of modest means.

Despite being sentenced to lockdown rehab, there are parts of Lindsay Lohan that will always be free.

Wearing California Highway Patrol shades and a braless, loose fitting tank top that aired out her gorgeous girls, the 26-year-old courthouse princess enjoyed a day of shopping in Venice Beach on Thursday.

Linds grabbed some new threads at a vintage shop and eyed some jewelry ... without incident.

After getting $100 million for kickin' ex-husband Tiger Woods to the curb, Elin Nordegren is putting all of her fancy footwork to good use ... by coaching her daughter's soccer team.

With her adorable kids at her side, the gorgeous 33-year-old -- who's reportedly dating billionaire Chris Cline now -- showed off her amazing God-given talents at a game in Jupiter, Florida on Thursday.

One thing Coach E is sure to teach her players ... never ever cheat.

Honey Boo Boo's mother "Mama" June Shannon flaunted her sexy new curves -- after recently losing 100 pounds -- while filming her hugely successful reality TV show in Georgia Thursday.

Kim Kardashian secretly sat for her deposition Tuesday in L.A. ... and she testified under oath that when she accepted Kris Humphries' proposal of marriage and when she said "I do," she really did love him.

TMZ has learned ... the deposition was taken at the offices of Kim's lawyer ... disso queen Laura Wasser (the pic was taken on their way in). It lasted 9 hours.

Kris Humphries' lawyer probed for evidence that Kim defrauded Kris and only married him to goose ratings for her reality show, but we're told Kris didn't make any headway. He's shooting for an annulment based on fraud, but sources say the depo didn't help his case.

Get this ... Kris did NOT show up for the depo. His lawyer made a big stink in court that Kris had a right to be there. He didn't even have a game on Tuesday.

As for the reality show ... we're told Kim testified it played no part in her decision to tie the knot. Other than that, we've learned Kris' lawyer, Lee Hutton, did not ask much at all about the reality show and whether it was staged. Hutton has made numerous threats that he would blow the lid off the reality show during the trial, so it's surprising he virtually ignored it in Kim's depo.

Kim has been gunning for a divorce for almost a year-and-a-half. The trial is set for May 6.

Britney Spears is all that ... and a bucket of chicken.

Wearing her brunette weave at half-mast, a flowing top made out of a doily from the Kentwood general store and a pair of commemorative daisy dukes from the 2007 Britney Spears Malibu Gas Station Tour, the 31-year-old mother of two looked extra crispy as she picked up some vittles from Kentucky Fried Chicken in Thousand Oaks on Tuesday.

Interestingly, Brit Brit grabbed the KFC to go after a photo shoot for the fitness magazine Shape.

Michael Fassbender chatted it up with a very pretty blonde girl last night in London, and you gotta wonder what she was thinkin' ... as in, "Is that a banana in your pocket or are you just Michael Fassbender."

MF was in London, outside the Groucho club in Soho. The lady seems pretty calm about the whole thing. It's unclear if she recognizes Michael ... after all, he does have his pants on.

Michael is famous for "Shame." He's also famous for his extremely large penis.

When you put them side-by-side, Tiger Woods just can't hold a candle to Elin Nordegren's alleged new boyfriend. In fact, Tiger's is WAY smaller.

Billionaire coal magnate Chris Cline has moored his mega-yacht on Florida's swanky Jupiter Island, directly in front of Tiger's lesser vessel.

It's no contest all the way, with Chris' boat measuring 164 feet, and Tiger's a tidy 155 ft.

Chris does misstep in the name game. His Yacht is called Mine Games. The name of Tiger's boat is more like a plea ... Privacy.

Back to size ... Chris has got Tiger beat by a solid 9.

Now that he's confirmed he's dating 28-year-old Olympic skier Lindsey Vonn, Tiger Woods has his choice of rooms to make the magic happen in his sick $60 million mega estate.

Tiger's ridiculous waterfront crib on Florida's exclusive Jupiter Island comes with all the bare necessities for an athletic super couple to work up a sweat together ... like a tennis court, diving pool and lap pool, running track, boat slip and the ubiquitous backyard golf course.

Lindsey will no doubt enjoy her time being the mistress of the house.

Jumping on the Michelle Obama hair trend, Kim Kardashian temporarily diverted attention from her growing baby bump -- and signature badonkadonk -- and let her newly chopped sexy bangs take center stage as she crossed a street in Beverly Hills this weekend.

While rumors persist that her engagement to Liam Hemsworth is off, Miley Cyrus tried to find some solace in the comfort of her sexy bikini in Palm Springs this weekend.

The 20-year-old former Disney diva soaked her newly tatted bones at a pool in the desert. Meanwhile, Liam is still off in the Philippines for work.

After being spotted without her engagement ring recently, the breakup reports intensified ... but this weekend Miley tweeted that it's just because the wedding bling is being fixed at the jeweler.

Time will tell if that's all that needs to be repaired.

Even when Matthew McConaughey looked deathly skinny he was secretly plotting to immediately pack on the weight and regain his famous physique ... and TMZ has learned how he did it in under 4 months.

By now you've seen the pics -- McConaughey looking ripped again ... after dropping nearly 30 pounds last November to play an AIDS patient.

According to our sources, even though McConaughey looked like an extra on a Sally Struthers infomercial ... he was still pumping iron to keep his muscles intact.

So when it was time to get jacked for his next role ... we're told MM simply added weight by stuffing his face with lots of fish, asparagus, eggs, nuts and sweet potatoes.

Our source described the process as "very well planned out."

All right, all right, all right.