After reports surfaced earlier today that Kristin Cavallari was fiending for coke at a Super Bowl party in Miami earlier this month, she tweeted, "Get ur facts straight Us Weekly-ur article is complete BULLSH*T."

We snapped the Hills hottie leaving Urth Caffe on Melrose earlier today, and we didn't exactly get any crackhead vibes from her. So are these reports totally bogus? Or is Kristin secretly battling a drug addiction?

Though many people questioned Lindsay Lohan's commitment to the Altitude 360 Haiti fundraiser in London last night, sources at the UK hotspot tell us Lindsay absolutely held up her end of the deal when it came to hosting the party.

Lindsay posed for pictures on the red carpet and then headed inside to mingle with partygoers, and she then took the stage and spoke to the audience, encouraging them to donate to the charity.

Lindsay also recorded this PSA with a pal, and even though her red lipstick is a bit distracting, her heart is certainly in the right place!

I bet! The hotel heiress slash globetrotter returned home to LA after a romantic vacay with Doug just in time to celebrate her b-day - 29 years old! Which is kinda hard to believe, because Princess P doesn't look a day over 21!

And they're pink! Natch. After all, it's Jessica Simpson!

John Mayer's bitter ex - now forever known for being like "sexual napalm" - was leaving a boxing class in Bev Hills yesterday with a pal when a cop pulled them over. Uh-oh! At least Jess wasn't the one driving.

How are you gonna sweet talk the officer from behind those big gloves?

I guess she couldn't make it to Mercedes-Benz fashion week in New York, so she decided to buy a Mercedes of her own!

The always adorbs Amanda Bynes just purchased the new Benz in Beverly Hills last night. Hmm, go her! But does she really have the ca$h? First get an acting job, then buy the car!

It's about time! He had to say something eventually.

Tiger Woods will be making his first public statement since this whole car accident/cheating scandal began late last year. The golfer will "will be speaking to a small group of friends, colleagues and close associates" this Friday in Ponte Vedra Beach, Florida at the TPC Sawgrass Clubhouse. Tiger's official website has this to say:

"While Tiger feels that what happened is fundamentally a matter between him and his wife, he also recognizes that he has hurt and let down a lot of other people who were close to him. He also let down his fans. He wants to begin the process of making amends, and that's what he's going to discuss.

His remarks will be open to a press pool for live coverage. It is NOT a news conference."

Hmm, sounds like he won't be taking any questions. This apology better be good!

Another wrinkle in the story - Tiger's statement will be held during the Accenture Match Play Championship in Arizona... Accenture was the first sponsor to drop Tiger after the scandal hit. However, the golf pro's agent, Mark Steinberg, insists it was simply "a matter of timing."

And when Steinberg was asked if the statement could have waited until after the tournament, he said: "No."

But why have the press conference at the TPC Sawgrass near Jacksonville? Tiger's in Orlando!

Ty Votaw, EVP of the PGA Tour, tells X17online the following: "We were asked by his organization to provide a facility and we were happy to do so. They requested our help."

And as for the fact that Accenture's tournament is the same day? Could it be that Tiger is kinda sorta trying to take the spotlight away from them?

Votaw claims it's "just a timing issue and purely coincidental."

It doesn't hurt that she has such a hot bod and pretty face!

Tiger Woods' wife Elin is carrying on in Orlando, picking up daughter Sam from school and riding around with her twin sis Josefin. Sidebar, loves her outfit! The belt and boots are chic and the top is casual enough to make her look like a normal person.

Props!

What the Hills?!

A source for Us Weekly says that during a party in Miami over Super Bowl weekend, Kristin Cavallari was "wasted the entire time" and "going around to everyone, asking them to score her some coke."

Though Kristin's lawyer denies the allegations, sources close to the reality TV starlet say that her hard-partying lifestyle is taking a toll on her. "Her issues are becoming apparent to everyone," a source says. "She's getting scary-thin and not showering regularly...She's clearly unhealthy."

While MTV declined to comment on the matter, a source close to the show said, "Her drug problem finally became an unavoidable conversation topic on film. If MTV uses the footage, it will be clear to everyone."

Hills co-stars/friends Brody Jenner, Audrina Patridge, Lo Bosworth and Stephanie Pratt have reportedly urged her to go to rehab, but "she doesn't think she has a problem," the source says.

Do you believe this!? She doesn't seem like that much of a mess lately, but maybe she's doing a good job hiding it?