Visit msnbc.com for breaking news, world news, and news about the economy

Justin Bieber stopped by the Today Show to set the record straight regarding Mariah Yeater's claims that he fathered her son.

While surrounded by hundreds of screaming fans, Bieber, 17, told Matt Lauer:

"None of those allegations are true ... I know I'm going to be a target, but I'm never going to be a victim. It's crazy, every night after the show I've gone right from the stage right to my car, so it's crazy some people want to make up such false allegations. But to set the record straight, none of it is true."

Yeater, the 20-year-old woman who claims she slept with Justin Bieber, says she and Bieber had sex following his concert at the Staples Center on October 25th of last year ... resulting in the birth of her son, Tristyn Anthony Markhouse Yeater.

Bieber adds, "Never met the woman."

However, if the alleged sexual encounter is proven to be true, Yeater could be charged with statutory rape due to the fact that Bieber would have been only 16 at that time.

He may have packed on a few pounds to play J. Edgar Hoover in the upcoming biopic on the founding FBI director's life, but Leonardo DiCaprio looked like his usual dapper self while attending AFI's Opening Night Gala in Hollywood, on Thursday.

The Great Gatsby star has been garnering lots of Oscar buzz for taking on the role of one of the most important characters in American history. Leo not only gained weight, he also donned prosthetic teeth, a bald cap, a device to reshape one nostril, latex body pads, colored contacts and layers of silicone applied to his face.

DiCaprio recently confessed of his decision to take on such a meaty role: "When I can’t immediately define the character, and there’s an element of mystery to it and still a lot to be explored, that’s when I say yes. I like those kinds of complicated characters. I just do.”



Check out video of DiCaprio's co-star Naomi Watts at the premiere, after the jump ...

The Partay is over!

At the insistence of PETA, Reese Witherspoon has promised never to carry her $3,820 Chloe "Partay" python bag again.

The Oscar winner ditched the snakeskin purse after PETA noticed her toting it around LA and immediately sent her a video -- narrated by Walk the Line costar Joaquin Phoenix -- that detailed cruel practices used on animals for the sake of fashion.

After Witherspoon vowed to give up the bag, PETA said in a statement:

"We've long known Reese to be a kind person, so we're pleased -- and not surprised -- that she is hanging up her python bag for good. We hope Reese's honest mistake will serve as a reminder for all of us to be extra-certain that what we’re buying is mock croc or fake snake."

The Chloe bag isn't exactly legal either -- California outlawed the sale of snakeskin in 1970.

After a trip to the Byron and Tracey Salon in Beverly Hills, Kate Bosworth was all smiles as she showed off her newly coiffed 'do (and a "wedding" band on her left finger!), on Thursday.

The Blue Crush star was first spotted sporting matching rings with her beau, producer Michael Polish, at the Vogue Fashion awards in LA -- could they have secretly gotten married?

Bosworth recently opened up on her love for Polish, expressing: "He’s a special one. There’s nobody in the world I admire or respect more. When I look at him, it’s not a crazy infatuation, it’s more like we are each other’s life partners.”

It seems Kate has finally found "the one".

Selena Gomez was spotted jetting out of LAX on Thursday afternoon, and even though the teen Disney starlet was mobbed by fans and photographers, she giggled as she hopped out of her car and headed inside to go through security.

Selena didn't seem fazed when asked about boyfriend Justin Bieber's alleged baby mama Mariah Yeater, as she has far bigger things to worry about, like hosting MTV's European Music Awards this weekend. Yesterday she tweeted, "Packing for the #MTVEMA are you ready Belfast? Tune in Sunday Nov. 6th, big surprises for you guys."

Rosie Huntington-Whiteley was spotted leaving a pal's house in Hollywood on Thursday afternoon, and the Transformers hottie covered up her flawless figure with a long skirt and top, but she did show off a decent-sized ring on her left hand.

So what's the deal with the sparkler? Rosie shot down engagement rumors earlier this year, and while we can't say we've seen this particular piece of bling on her ring finger before, she is a big fan of jewelry, so it appears as though this is just another piece in her collection!

The trailer for Wanderlust has hit the web, and this is our first peek at Paul Rudd and Jennifer Aniston in the upcoming romantic comedy. As you may remember, this is the film where Aniston met current beau Justin Theroux, so even if it doesn't strike box office gold, she still got a pretty good deal out of it!

The flick follows a couple who leave their city life behind and join a hippie community, and it hits theaters on February 24.

The prosecution and defense gave closing arguments in Conrad Murray's involuntary manslaughter trial on Thursday.

Defense attorney Ed Chernoff said the prosecution "absolutely failed to prove a crime."

All the defense has to do is give the jury reasonable doubt for Murray to escape conviction. Chernoff reminded the jury of the defense's argument; that Jackson swallowed Lorazepam on his own.

Prosecuting attorney David Walgren called the defense's theory "junk science." He reiterated his points that Murray did not call 911 soon enough, and that he was negligent in his everyday care of Jackson. "Conrad Murray knew what he had done, and he knew his acts killed Michael Jackson ... Justice demands a guilty verdict," he said.