Justin Bieber Takes DNA Test To Prove The Baby Isn't His

We've learned ... Justin took the test at a lab under "very controlled circumstances." We're told there is a solid chain of custody, so it's going to be hard for Mariah Yeater or her lawyer to challenge it.

As we first reported, Justin's team will NOT settle or even discuss settlement with Yeater or her lawyer. It's now up to her to provide DNA results from Mariah's baby.

Justin has vowed to sue Mariah and her lawyers once he establishes he's not the daddy.

Mariah's lawyer was unavailable for comment. more on this story

Katy Perry To Host Saturday Night Live

It will mark Katy's debut as host; she was the music guest on last season's premiere episode, hosted by long-time SNL cast member Amy Poehler.

Not only did the pop star sing a couple of songs, but she got in on the comedy fun by joining a few skits during the show. more on this story

Michael Jackson's Immortal Arrives

Musical designer Kevin Antunes worked with Jamie King, the writer/director of Michael Jackson The Immortal World Tour, in redesigning and reimagining more than 40 of Michael Jackson's greatest original recordings, creating a fully immersive experience into Michael's world by synching this re-envisioned music with the visuals on screen and the live action unfolding before audiences on stage.

After spending a year in the studio working with Michael's original multi-track master recordings, Kevin created this new soundscape to Michael's artistry while preserving the power and familiarity of his unparalleled voice and his legendary tracks. The result was not just a unique musical journey through Michael's world but also an album that offers a fresh listening experience. Even those who are still waiting to see the traveling arena show will appreciate the depth and richness of Michael's music in an entirely new way. more on this story

Natalie Wood Death Investigation Won't Lead To Prosecution?

Although the L.A. County Sheriff's Dept. says Robert Wagner is not a suspect, it's pretty clear -- as the last person to see Natalie Wood alive -- he's the target of the probe.

Under California law, even if Wagner accidentally pushed Natalie into the dark water ... the most he could be charged with is involuntary manslaughter. But here's the problem -- there's a statute of limitations of 3 years for that crime, so prosecutors would have had to file charges 27 years ago. Ditto voluntary manslaughter, which has a statute of limitations of 3 years.

The only crime for which anyone could be prosecuted is first degree murder, because there's no statute of limitations. Remember, there are no possible witnesses other than Robert Wagner. Short of a bizarre confession, D.A. sources say there's no chance of a prosecution. BTW, there's a 6-year statute of limitations on second degree murder.

As for why the Sheriff is investigating the death ... one D.A. source said, "It's an exercise in futility. I just don't get it." more on this story

Lady Gaga Makes TV Appearance

During the conversation, Gaga spoke about her recent performance of the song on the UK edition of X Factor, saying that producers gave her free reign to do whatever she wanted with her presentation.

"'Marry the Night' is about marrying your obstacles and the challenges that you face to become great or to live your dreams," said Gaga, "so I thought it would be a funny metaphor to sing on 'X Factor' with my head cut off. The show must go on." Check it out here.

Rihanna Appears On The Ellen Degeneres Show

During their chat, Rihanna opened up to Ellen about her dating life�or lack of it. "I am not dating anyone right now," she said. "I am not dating at all."

"I am not necessarily happy being single. It's not really that cool," continued Rihanna. "It sucks, but it is what it is. There are things that � Let me say this right. Not make it like my work is my everything. I do put a lot into my job � It definitely affects my personal life. My personal life is non-existent, which is not good, for the long run, not for me, not for 'her,'" as she pointed downward. Check out video here.

Earth, Wind & Fire To Deliver Now, Then & Forever

More than simply a new career-spanning best-of compilation, Now, Then & Forever centers around favorite tracks hand-picked by A-list celebrity friends and fans of the band including world-class musicians whose work has been influenced or inspired by EWF's groundbreaking catalog.

Celebrity curators who've picked their favorite EWF songs for the Now, Then & Forever collection include Andre 3000, Lenny Kravitz, Pharrell, Raphael Saadiq, will.i.am and David Foster, among others. more on this story

Leonard Cohen To Return With Old Ideas

The album's ten songs poetically address some of the most profound quandaries of human existence - the relationship to a transcendent being, love, sexuality, loss and death. Arguably the most overtly spiritual of the revered artist's albums, Old Ideas inspires commitment to a greater sense of compassion and decency.

While the recording of Old Ideas began in earnest in January 2011, many of the new songs and their lyrics have been in the works for years. Early versions of two album tracks, "Amen" and "Lullaby" were originally recorded in 2007, while early versions of "Lullaby" and " The Darkness" were performed live during Cohen's recently concluded, sold-out world tour. more on this story

Mary J. Blige Set For TV Concert Special

Blidge is appearing to celebrate her album My Life II � The Journey Continues (Act 1) and My Life Blossom Fragrance Holiday Gift Sets as a part of HSN's 24 Hour Beauty Gift Event.

"I'm excited to bring you My Life II � The Journey Continues (Act I) with my beautiful fragrance My Life Blossom," says Blige. "They both are two very personal projects of mine and pure gifts from my heart." more on this story

Chaka Khan, Erykah Badu and Boyz II Men Added To Vh1 Divas

They will join VH1's "divas" in paying homage to these cities and soul music's timeless classics at New York City's Hammerstein Ballroom. "VH1 Divas Celebrates Soul" premieres Monday, December 19 at 9 PM/8c on VH1.

"We are so excited to feature these diverse and multi-talented women and men joining our 'Divas' roster this year to showcase the global impact of soul music and how influential and inspirational the music is to today's chart-topping artists," said Lee Rolontz, EVP, Original Music Production & Development, VH1 and VH1 Classic. "Celebrating the soul music borne out of some of the world's greatest cities being performed by today's top artists with the iconic legends that put soul music on the map prove this year's 'Divas' will be a must-see event." more on this story

MTV Plans Britney Spears Music Video Tournament

MTV sent over these details: It's up to Britney fans and all MTV.com readers to vote in the first round, where we have pitted 30 of Britney's iconic videos against each other bracket-style to battle it out for the highest honor of being named the Best Britney Video Ever, just in time for Spears' 30th birthday December 2.

The first round of voting is open until Tuesday at 11:59 p.m., at which point the 30 videos will be narrowed down to the top 16. You can vote as many times as you wish and campaign as much as you see fit for your favorite videos to move on to the next round of voting. more on this story

Bruno Mars Score Twilight Hit

The success of "It Will Rain" marks the 11th top 10 single for Mars, following solo blockbusters like the #1 hits "Just The Way You Are" and "Grenade" � both featured on 2010's 24x-worldwide platinum debut album, "Doo-Wops & Hooligans"

His other hits include songs written and co-produced by Mars in his role as one of The Smeezingtons (Mars, Philip Lawrence, Ari Levine), including fellow Elektra recording artist Cee Lo Green's history-making "F**k You," recording artist Travie McCoy's "Billionaire (Feat. Bruno Mars)," and "Nothin' On You (Feat. Bruno Mars)," the #1 smash by Rebel Rock Entertainment/Grand Hustle/Atlantic recording artist B.o.B.

Very Best of Neil Diamond Details

The new long-awaited definitive single disc compilation of 23 best-loved hits and signature tracks from America's quintessential singer-songwriter is the first Neil Diamond collection to draw from the artist's complete studio discography.

The Very Best of Neil Diamond - The Original Studio Records includes his first pop chartings as a writer/performer for Bang Records in the mid-1960s; his spectacular career-defining hits for Uni/MCA (1968-1972); music from 1980's The Jazz Singer (his 5x platinum-selling soundtrack album on Capitol Records) and studio essentials from a long-running association with Columbia Records that began in 1973 with the Jonathan Livingston Seagull soundtrack album and runs through a pair of Rick Rubin-produced albums: 12 Songs (2005) and Home Before Dark (which became Neil's first Number 1 album on the Billboard 200 in 2008). more on this story

Lady Gaga and Rihanna Lead This Week's New Releases

New albums are out now from Rihanna, Lady Gaga, Michael Jackson, Mary J. Blige, Adam Lambert and others.

New DVDs include projects from Lady Gaga, Britney Spears and Taylor Swift. See what else is coming out this week here.

NCIS Star Pleads Not Guilty in Choking Case

TMZ broke the story ... Fisher was arrested back in September after an argument with his neighbor turned violent -- with Fisher allegedly attempting to asphyxiate the guy.

Fisher claims he only got physical in self-defense, after his neighbor insulted the actor's dead mother -- but law enforcement didn't buy it ... charging Fisher with simple battery weeks after the incident.

Fisher pled "not guilty" to the misdemeanor charge soon after, and is due back in court next month. Calls to Fisher have not been returned. more on this story

Singled Out: J. Dash's The Wop (Featuring Flo Rida)

The Wop started as a dance my friends and I did in the club to other people's music. The Wop itself is very simple and we would do so many different things in-between, like smoke the cigarette, kill the roach, hold the trophy�.the dance could go on for hours and there would be a crowd of people at the club watching us.

It was so organic, we had so much swag when we were doing it that people HAD to watch to see what we were gonna do next. They wanted to hate but couldn't! The dance looks so much better in numbers so it would start as the three of us, then we'd teach some girls, then some guys would learn and next thing you know the whole place would be doin' the Wop.

One night my friends told me I HAD to make a song that we could do the dance to. I produce my own beats as well so I went back to my dorm room at UF and made the track. Honestly, since we had been doing the dance so much thebeat came very naturally, it was already in my head. I did that, wrote the lyrics, recorded it and mixed it all in one day. We took the rough version to the club and had the DJ spin it, immediately the people started reacting to it.

The song started as something for me and my friends, I had no idea it would become how huge it is today. Between my video and fan videos we have 25 MILLION YouTube views, which is just crazy! You should all be on the look out for my album Tabloid Truth, hitting iTunes early next year and make sure to make some videos of you and your friends doing the WOP!

Hearing is believing. Now that you know the story behind the song, listen for yourself and check out the hit video right here!