Justin Bieber isn't letting baby daddy rumors get him down.

While 20-year-old Mariah Yeater is claiming Bieber is the father of her baby and demanding in court that he take a paternity test, Bieber is brushing off the news.

On Wednesday, he hung out at radio station Power106, and showed off his rapping skills. But, Bieber might have been wiser to rap about something OTHER than his relationships with the ladies. At one point, he said:

"Get it done abundantly, she wants to get up under me ... I got honeys all up on me, baby I just get it done."

Oh, baby!

Gaga photo courtesy of Shareif Ziyadat/ABC

Lady Gaga will sit down with Katie Couric for ABC's holiday special, A Very Gaga Thanksgiving, and not only will the pop superstar perform eight songs (including several Christmas classics), but she will also chat with Couric and a handful of young students at her alma mater, Sacred Heart Catholic School in Manhattan.

"We all know Lady Gaga is a phenomenon. This is a chance to see more of who she is beneath the wild costumes and staged musical numbers," Couric told the press. "She will impress you, delight you and surprise you."

The 90-minute special airs on November 24, and get this -- Gaga is also going to cook deep-fried turkey and waffles as the cameras roll!

Miranda Kerr is still in NYC after throwing a big Halloween party on Monday -- a party that she got flack for, because it was on the same night as fellow supermodel Heidi Klum's bash!

But, Miranda brought it -- the party was a success! And NYC seems to be agreeing with the Aussie beauty; she and hubby Orlando Bloom are still in the Big Apple.

We caught up with Kerr as she headed into The Plaza hotel. She looked NYC-stylish in black stilettos and a scarf, and carried a cute burgundy tote.

On Wednesday night, Miranda and Orlando Bloom grabbed dinner together at an Italian restaurant, where she told reporters that baby Flynn is now crawling! Too cute!

To add more to the cuteness factor, Kerr recently revealed that her favorite Christmas present from Orlando was when he had love letters they'd written to each other framed.

Today Rob Pattinson, Kristen Stewart and Taylor Lautner had their handprints immortalized in cement outside of Grauman's Chinese Theater in Hollywood, and the trio smiled as they got their multi-million dollar mitts dirty in front of hundreds of screaming Twilovers.

Jimmy Kimmel hosted the ceremony, and Rob, Kristen and Taylor all thanked fans and the media for their support. "This is incredibly scary, and I also forgot how hot LA was. I shouldn't have worn a suit," Rob joked. "Thank you guys so -- this is such an indescribable honor for how young we are. You should all come up here and put your hands in!"

Twilight author Stephenie Meyer also made an appearance, and she told the crowd, "I think this is really awesome, and I know how much they appreciate your ardent support. Their lives have changed a lot in the last few years, and they've done it with such class and an amazing ability to stay balanced and who they are."

Breaking Dawn hits theaters in a little over two weeks -- we're def counting down the days!

Mariah Yeater, the 20-year-old woman who claims she slept with Justin Bieber, is showing off her pierced and tatted up body in new, scandalous photos.

Yeater 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.

In a California courtroom under oath, Yeater told a judge:

"On July 6, 2011, I gave birth to a baby boy. That was exactly 36 weeks and two days after the sexual encounter with Justin Bieber. Based upon the timing as well as the fact there were no other possible men that I had sex with that could be the father of this baby, I believe that Justin Bieber is in fact the father of my baby."

So after seeing some of these photos, do you see Bieber being attracted to Yeater? She doesn't look ANYTHING like his current girlfriend Selena Gomez.

See more photos of Mariah in our gallery below.

Yesterday we spotted Maksim Chmerkovskiy and Hope Solo leaving rehearsals for Dancing with the Stars, and we also caught Nancy Grace, Rob Kardashian and Cheryl Burke sweating it out.

So what's this we hear about Maks and fellow pro Derek Hough feuding behind the scenes? "They hate each other," an insider tells Us Weekly. The boys reportedly squabbled after Chmerkovskiy told DWTS judge Len Goodman to retire the other day, and Derek (who's won the competition three times now) told the mag, "I had a laugh about that [remark] ... I was looking at the plaque upstairs and…well, never mind." Burn!

"The professional dance community is really small. The dancers have known one another their entire lives," the source added. "Now that the group is famous, it's added a whole other level of rivalry and competitiveness."

We're always impressed at the Kardashians' abilities to put a media spin on a situation -- case and point: Kim Kardashian's divorce.

Since her announcement Monday, Kim and sister Khloe have done several interviews in Australia while promoting their handbag line, and Kris Jenner has been all over the talk show and radio circuit to promote her new autobiography.

But, of course, Kim's divorce has become the topic of conversation. We're getting just about sick of listening to the same old story from the Kardashians on this one, and to prove our point, thought we'd do a little Kardashian Kount. Here's how many times Kim, Khloe or Kris has made each of the following points regarding Kim's divorce:

3 - Kim's not the first person to go through a divorce (duh!)

4 - Kim didn't want to disappoint anyone.

4 - The marriage was real! REAL, we tell you!

3 - Kim doesn't want to go into the details (then why is she giving an interview?)

4 - Kim wanted to stick to her professional commitments and go to Australia. (How admirable!)

10 - Kim didn't make money off the wedding! Nothing! "Not a dime"!

11- We're SO proud of Kim. (She's been through A LOT. A LOT, you guys!)

8 - Kim's giving back to charity! (BUT, she does this in private and doesn't want you to know about it! So ... that's why we're talking about it in this interview.)

12 - We're getting through this as a family. (Because we're a family. Didn't you know? If not, please watch our reality show on E!)

Justin Timberlake dropped by BBC's Radio One in London to chat about his new film, In Time, and though the flick took the third place spot at the weekend box office, Justin didn't seem to mind!

Maybe that's because he's back on good terms with girlfriend Jessica Biel? He'll be sandwiched between his sexy co-stars Olivia Wilde and Amanda Seyfried on the red carpet over the next few weeks, so hopefully Jess doesn't get toooo jealous!