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Chris Brown's putting his best foot forward for his big court date today -- carrying a freshly dry-cleaned suit on one arm while leaving his L.A. home moments ago ... Rihanna close behind.

Rihanna spent the night at CB's place -- you know, helping him relax a little before he faces the judge in an hour.

As we first reported, Chris is gonna have a lot of 'splaining to do today after prosecutors accused him of lying about his community service hours.

While most of the country is freezing their asses off, former "The Hills" star Audrina Patridge warmed her sexy bones by slipping into a tiny bikini and hitting the sand with her pup in Manhattan Beach.

The 27-year-old is the perfect cure for the winter blues.

Kim Kardashian's doctor thinks Kim's unborn baby may be at risk, because of the stress Kris Humphries is causing by dragging out their divorce ... TMZ has learned.

Sources familiar with the situation tell TMZ ... several days ago Kim called her doctor in the middle of the night to come to the house because she was having severe pains. The doctor examined her, but then warned he believed the problems were largely stress-related.

Sources say ... the only significant stress in her life right now is the divorce. And hours before her meeting Tuesday with her lawyer, disso-queen Laura Wasser, Kim's pains returned in full force.

The doctor warned Kim she needs to handle the stress or else there could be "long-term effects." The doctor did not elaborate, but we're told Kim is freaked out her baby may be at risk.

Kim's mom Kris Jenner appeared on "The View" this morning, saying, "Kim has been going through this divorce for months. She has been under a lot of stress because of it and the doctors told her you’ve had a really tough week and the stress could become a problem if she isn't careful."

9:42 AM PT -- A rep for Brown says the singer did NOT write the Instagram post ... insinuating that it was drafted by an imposter.

You really buyin' that?

Hours after Chris Brown was accused of cheating the system, he got some serious support from Rihanna ... who rode shotgun with the singer following a recording session in L.A..

The two were pictured leaving the L.A. studio together around 4:30 AM ... following an angry statement from Brown in which he said his life is PURE HELL.

We broke the story ... prosecutors believe Brown LIED about doing community service -- and could face serious jail time for allegedly participating in a conspiracy to dupe authorities.

But last night, Brown reportedly took to Instagram to unload about the situation ... telling his fans he can't relax because the stories about his life are constantly being covered on TV, radio and everything else.

Brown's frustrations are obvious -- "Im wise I can handle the hate but enough is enough, yo!!"

He continued ... "Im a human being and I honestly think I deserve respect Im sick of being accused ... Im tired yall Just don't understand Ive been going through this sh*t since I was 19 years old .. You cant sit here and tell me to calm down, when am I gonna get a positive outcome out of anything I do?"

"Im not gonna sit here and play victim, Im just tired of this sh*t ... I pray every day and night for a new outcome ... and just when everything seems to be going good some new sh*t happens."

And then Brown -- a convicted woman beater -- had the balls to write, "A day in my shoes is a day in hell, believe it or not!"

A hearing in the community service matter is set for today in L.A. at 2:00 PM PT.

Stay tuned ...

It's pretty much freezing everywhere else on the planet ... but this weekend in L.A. it was in the 70s -- and "Shahs of Sunset" star Mercedes "MJ" Javid took full advantage of the warm weather.

Not wanting to waste a moment of sunlight, Javid stepped out in her natural habitat on Sunday -- a hotel pool -- and sunned herself in a wild bikini.

Don't hate us 'cause we're beautiful.

Christina Aguilera finally figured out a way to get her ex-husband's lingering crap out of her life -- by putting the house up for sale.

Jordan Bratman -- whose marriage with Christina officially ended way back in 2011 -- showed up to Christina's Beverly Hills pad today with moving trucks ... to clear out the rest of his belongings ... now that Xtina listed the place for sale.

It's a glorious day for Christina, because as TMZ previously reported ... when she and Jordan first split he took his sweet time moving out. Fact is ... Christina and her lawyer put the heat on 2 years ago, and Jordan moved most -- but not all -- of his stuff out 2 years ago.

In fact ... months after the couple split Jordan, Xtina and her NEW boyfriend were all living in the family home as one big awkward family.

Time to fire up the Justin Bieber/Selena Gomez rumor mill ... because Selena was spotted returning home yesterday after hanging out allllll night with the Biebs.

The on-again/off-again (to the infinity power) couple hasn't actually been seen together in some time ... and we're told this is the first time the two have seen each other in a month.

It's clear these two young lovebirds just don't know how to quit each other.

Lance Armstrong is a dirty cheater ... is what two museum displays -- originally intended to honor Lance -- will now tell the world ... TMZ has learned.

A rep from Madame Tussauds Hollywood tells TMZ despite Lance's confession he was a big-time doper, his wax statue will remain on display -- but they're rewording his caption to remove any reference to "7 world titles."

We're told the new display will definitely address the scandal that's destroyed Lance's legacy.

And there's more bad news for Lance in San Fran where the Wax Museum at Fisherman's Wharf has already changed his nameplate. It now reads "Disqualified 7 Time Winner of le Tour de France."

Chris Brown said he wanted to talk to police, but getting pulled over for speeding yesterday in Beverly Hills is probably not what he had in mind.

Law enforcement sources tell TMZ ... Brown was pulled over for going 60mph in a 35mph zone. We're told the officer ticketed Brown for speeding and let him go on his way.

As TMZ first reported, following his altercation with singer Frank Ocean, our sources say CB has been itching to tell cops his side of the story.

Justin Bieber decided to give his bad luck Ferarri a rest yesterday afternoon and went horseback riding with a few friends in North Hollywood.

Just in 2013 alone, Bieber's white Ferrari was at the center of a paparazzo's death, bottomed out at the Four Seasons parking lot and got pulled over for tinted windows ... all while people other than Bieber were driving.

Dressed similarly in blue-ish outfits, hard-partying Hollywood playboys Gerard Butler and Mel Gibson were in good spirits as they hung out for dinner at Zuma in Miami on Thursday night.

We're told the new BFFs were with a large group and chowed down on fancy 28 oz steaks, caviar and even threw back some sake ... without incident.

Because you never know when you might be involved in a home invasion again, Taye Diggs is making sure he stays in great shape and hit up Equinox gym in L.A. on Wednesday.

Earlier this week, the buff 42-year-old chased down and single-handedly apprehended the guy trying to break into his house.

Kim Kardashian's unborn kid is proving to be a big star ... as the growing fetus made a splash by bulging out of her belly on Wednesday.

With her lovely girls also on display and busting through her sheer tank, Kim and her baby bump went for a late prenatal workout in L.A. last night.

"Game of Thrones" star Jason Momoa -- who also played Conan the Barbarian in the 2011 remake -- is finally revealing how he maintains his insane physique ... sexercise.

Momoa -- who recently chopped his trademark locks -- was out in NYC last night when we started talkin' gym habits ... specifically, how do you stay in shape ... CrossFit? Pilates?

"I f*ck a lot" ... Momoa said.

Seems like it's working ...

It took just four weeks, but Katherine Webb -- and all her gorgeousness -- have made it to the Super Bowl.

After a meteoric rise to fame after Brent Musburger famously gushed all over her at the BCS Championship game earlier this month, the 23-year-old Miss Alabama USA 2012 made her big game debut covering Super Bowl media day for "Inside Edition" in New Orleans on Tuesday.

It was a rough night for Lindsay Lohan and mama Dina ... first, flying to L.A. to dodge an arrest warrant and landing after midnight ... then getting rejected by a swanky hotel ... and TMZ has learned they were BLACKBALLED.

Lindsay and Dina showed up at Shutters on the Beach in Santa Monica (see video) at around 1 AM Wednesday. Lindsay stayed in the car while Dina went inside to check in, but she was unceremoniously turned away. Sources at Shutters tell TMZ they put Lindsay on a blacklist after she allegedly trashed one of their rooms in 2007.

Lindsay and Dina then went up the road a piece, to the Loews Hotel where they were also turned away. Management tells TMZ ... there were no rooms available.