Dustin Hoffman Why the Long Face?

Not to beat a dead horse -- but Dustin Hoffman didn't look too happy today in L.A. ... hours after hearing HBO had cancelled his new show "Luck."

As we reported, the network shut down the racetrack-themed series after a 3rd horse died on set.

Russell Brand Smashed Window REPAIRED ... for $240

The window Russell Brand allegedly smashed with a projectile cell phone is good as new -- and TMZ has learned, Russell's camp coughed up $240 to fix it.

We're told the New Orleans office building window was refurbished last night -- and a production assistant from the movie Russell's currently shooting in town swung by soon after to pay for it ... with $240 in cash.

TMZ broke the story ... Brand was accused of snatching a photog's camera phone on the street Monday night -- and rocketing it through a nearby window.

An arrest warrant for Brand has since been issued over the incident -- but no arrest has been made ... yet.

George Clooney Trades Stacy Keibler For 1st Lady ... For a Night

George Clooney's girlfriend definitely has her priorities -- she missed a night at the White House for a modeling shoot, but George found a suitable sub -- Michelle Obama.

George was at 1600 Pennsylvania Ave. for a White House State Dinner, honoring British Prime Minister David Cameron. Other famous attendees included Vogue editor-in-chief Anna Wintour, producer Harvey Weinstein, and actor Idris Elba.

As for Stacy ... we're told she left last night for Barcelona for a modeling shoot.

So we gotta ask ...

Nicki Minaj Flaunts Her Super Bass in Pink Bikini

For once, Nicki Minaj left all her ridiculous Lady Gaga wannabe costumes (minus one lime green wig) at home and stripped down to flaunt her curves in a simple pink bikini on the set of her latest video in Hawaii on Wednesday.

After that horrendous Grammy performance last month, the 29-year-old finally proved she has some natural God-given talents.

Bobbi Kristina Engagement Ring On Your Finger?

Whitney Houston's daughter was sporting an interesting piece of jewelry on her ring finger during her PDA-filled stroll with her "adopted" brother this week ... a big, fat ring.

As we previously reported, Bobbi Kristina and Nick Gordon finally went public with their relationship this week ... holding hands and kissing during a lunch date in Atlanta.

Now, with rumors swirling about a possible engagement ... the massive ring on Bobbi's finger isn't doing anything to hint otherwise.

Congrats ... maybe?

Kate Middleton's Cousin Who Wants to See Me Naked?

Kate Middleton's 21-year-old cousin Katrina Darling flaunted her royal lineage -- and everything else -- during her racy nearly-naked stage show in NYC last night.

Darling, who is the Duchess of Cambridge's second cousin once removed and has never met Kate, is a burlesque dancer and brought her erotic dance act to the U.S. this week.

It's safe to say Darling has been stripped ... of her title.

Rachel Uchitel Baby Bumpin' Around Town

With her unborn baby girl due next month, a very pregnant Rachel Uchitel and her hubby Matt Hahn walked the streets of San Francisco on Tuesday.

The former Tiger Woods mistress is looking belly good.

Lindsay Lohan Pulls Switcheroo After Incident

Lindsay Lohan SWAPPED SEATS with her passenger after allegedly striking a club manager in Hollywood early this morning.

Here's the deal -- while Lohan was leaving The Sayers Club after allegedly striking a 26-year-old just after midnight Wednesday ... she was photographed BEHIND THE WHEEL of her Porsche.

But a short time later, Lohan's car was parked next to two police cars on a nearby street ... with Lindsay now sitting in the passenger seat ... and her passenger in the driver's seat ... the ol' Switcheroo.

It's unclear if Lindsay was trying to dupe cops ... or simply didn't feel like driving anymore.

Lohan was not arrested ... and cops tell us they will only open a hit-and-run investigation if the manager files a report.

Lindsay Lohan Another Bad Decision ... Vehicularly Speaking

Lindsay Lohan is no Roads Scholar, because she continues to make bad decisions when it comes to cars.

We got this pic of her brand new Porsche -- the entire right side riddled with scratches and dents from an accident.

The good news -- Lindsay wasn't driving. The bad news -- She let the 22-year-old son of a friend drive the whip, which he scraped against a wall while trying to back out of a driveway.

We're told Lindsay is not upset because the kid has insurance and his mom said she'd pay anything insurance didn't cover.

As for the kid -- we're told he "profusely apologized" and Lindsay said she understood.

Lindsay Lohan -- making the case for public transportation in L.A.

Peter Facinelli Cruisin' Along After Break-up

The same day news broke that his marriage to former "90210" star Jennie Garth was over, "Twilight" hunk Peter Facinelli was spotted out riding his motorcycle -- and no longer wearing his wedding ring -- in L.A. on Tuesday.

The couple were married for 11 years, have three daughters, but have yet to file divorce documents.

For now, Peter is riding off into the sunset alone.

Russell Brand Named in Police Report As Alleged Cell Phone Snatcher

Russell Brand has been named in a police report in New Orleans ... by a paparazzo who claims the actor snatched his cell phone out of his hand and fired it through the window of a nearby building ... TMZ has learned.

Sources tell TMZ ... a photog named Timothy Jackson filed the report, citing "criminal damages" over an incident that went down Monday night.

Jackson told cops he was with a group of photogs ... when he began to shoot Brand with his iPhone from his car. Jackson claims Brand flipped out, wrestled the phone out of his hand ... and then Nolan Ryan'd it at a nearby building, shattering a glass window.

The pap immediately filed a police report. No word if he got his phone back.

Calls to Brand's rep have not been returned.

Law enforcement tells TMZ ... cops are investigating the incident and would like to speak with Brand ASAP.

Chris Brown’s GF I'm Scared to DEATH of Rihanna's Crazy Fans

Chris Brown’s GF is scared to leave her house without bodyguards by her side -- and she's telling friends, it's all because Rihanna's crazy fans are threatening to kill her.

In case you missed it -- there was a lot of speculation last week that Rihanna dissed Karrueche Tran on Twitter -- posting a pic of a bag of rice cakes wearing sunglasses ... with the caption, "Ima a make u my bitch."

The joke -- Karrueche's Vietnamese ... rice cakes ... etc.

But several of Rihanna's fans took the joke one step too far -- unleashing an avalanche of violent threats on Karrueche ... like "I hope Rihanna beat the dog shit outa yo ass!" ... "Watch yo back" ... and "I will kill you."

Rihanna never admitted the rice cake jab was directed at Karrueche -- but sources close to Karrueche tell TMZ, she now refuses to leave her house without Chris Brown's hired muscle by her side.

As for Karrueche's infamous BF -- we're told CB is 100% supportive of his new lady ... despite getting close with Rihanna recently ... and is urging her not to worry.

The real lesson here -- don’t date Chris Brown.

Halle Berry's Daughter Danger Lurks Right Under My Nose!

Halle Berry is constantly on the lookout for possible threats to her daughter's safety ... stalkers, abusers, etc. ... but this weekend, one thing got past Halle ... a GERM-RIDDEN STEEL POLE!

Halle and Nahla were hanging out on a ride at Knott's Berry Farm amusement park in Southern California when Nahla decided she wanted a taste of the unknown ... and plopped her tongue out on the safety bar.

Nothing a mouthful of Scope can't handle ... but seriously, GROSS!

Singer Lana Del Rey Stomachs Guns N' Roses

Proving that her performance on "SNL" isn't the only thing that's flat, lippy singer Lana Del Rey flashed her taut belly in a Frank Sinatra half-shirt as she left the Guns N' Roses show in L.A. this weekend.

Sweet child o' mine.

Rihanna Overexposed at Dinner

With her roots showing, a cockeyed facial expression, unflattering baggy men's jeans and a pair of construction boots, Rihanna's braless and see-through mesh top put on quite the R-rated show as she made her way to Da Silvano in the West Village this weekend.

Flaunt 'em if you got 'em.

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Jessica Simpson Still Pregnant ...

In case you forgot.