Miley Cyrus, Usher, Ludacris and Boyz II Men will be a part of Justin Bieber's upcoming 3-D feature film, as they were among the many guest stars at the 16-year-old pop star's concert Tuesday night (August 31st) at New York's Madison Square Garden. Also joining Bieber onstage was Jaden Smith, as well as Sean Kingston for their collaboration, "Eenie Meenie." According to MTV.com, Cyrus teamed up with Bieber for the song "Overboard," and Smith came out during "Never Say Never." He closed out the show with his hit...

Miley Cyrus and Liam Hemsworth are kaput, but could they get back together. An insider told HollywoodLife.com that there's a chance the former couple could rekindle their romance in the future, adding, "They both are of the mind-set that if it's meant to be, it will be."

But if the supposed source is to be believed, it sounds like Hemsworth is the one wanting to get back together. The source said, "Liam is holding out hope that he and Miley will get back together, but that's not going to stop him from letting...

Nicki Minaj has revealed that her mentor, Lil Wayne has had an epiphany while in jail. During a radio interview, Nicki said, "Can you only imagine what he's been holding and what's building up in that brain? I'm afraid for anybody . . . any of his competition when he gets out, because I just feel like it's going to be monumental. He's in a great state. When I speak to him, he sounds like he has some sort of clear understanding of everything now, almost like he's had some weird sort of epiphany since he's been there,...

Ne-Yo has explained why he and his future baby mama Monyetta Shaw have decided not to get married. In a radio interview, the singer said, "I'm having a child with my best friend on the face of the planet. We are not engaged, we have never been engaged. A lot of people have different opinions about our relationship but I'll put it to you like this She knows where my heart is at . . ."

He continued, "Plus, she knows that I'm not out here sluttin' out every night either. She's not tripping off trying to make me be...

Lady Gaga has been tapped to play special John Lennon tribute, organized by his widow Yoko Ono. According to MTV News, Gaga joins the bill for two "We Are Plastic Ono Band" gigs at the Orpheum Theater on October 1st and 2nd.

Also set to perform are Ono, Jane's Addiction singer Perry Farrell, Wu-Tang Clan's RZA, solo artist Tune-Yards, punk rocker Iggy Pop and Lennon's youngest son, Sean. The shows will pay tribute to Lennon on what would have been the his 70th birthday.

Gaga is slated to play the second night....

Lauryn Hill has implied that she plans to release a comeback album. In an interview with MTV News, when asked when she might release the album, Lauryn said, "We're getting closer. That's all I can say." When asked what she thought about today's music, she said, "It's a lot going on. It's interesting energy. It's not what it was, it's different. That doesn't necessarily means it's a bad thing -- it's a different thing."

On collaborating with anyone for the upcoming album, she said, "In terms of collaborations,...

Another movie could be in the works for Justin Timberlake. That's if you believe a report from ShowbizSpy.com, citing a source that says director Quentin Tarantino may want to cast the pop singer-turned actor for a new movie.

The insider claims, "It's a kind of dark comedy, very much in the Tarrantino style. Justin is a new raw talent when it comes to acting but Quentin feels he could be ideal for the lead role. He's excited about taking a teen heartthrob and turning him into a cold-blooded killer."

Reps for Matthew Knowles has blasted rumors that his daughter Beyonce has fired him as her manager and was hiring her husband Jay-Z as her new manager. A statement from Matthew's Music World Music Entertainment said, "Contrary to false rumors online, Beyonce and her manager Mathew Knowles unequivocally have had and continue to have a close personal and business relationship. Mathew Knowles is the sole and exclusive manager of Beyonce."

As previously reported, Beyonce is in the studio working on her fourth studio...

Diddy is being sued by an ex-Bad Boy executive for $12 million dollars. According to TMZ.com, Franchesca Spero filed suit in federal court in NYC, in which she described herself as a "51-year-old white woman" who served as a high-ranking exec for Diddy since 1998. She has accused the music mogul of firingher because she was "old and disabled."

In the docs, Spero has claimed that she and Diddy butted heads after she told him she needed major hip surgery in 2008 and then later "suffered a relapse" to an addiction to...

Katy Perry's Teenage Dream album debuted at Number One this week, moving more than 192,000 copies. She tweeted about the good news, writing, "Before I purr off to dreamland I want to say THANK YOU! Thank you so much for my FIRST #1 RECORD DEBUT! I couldn't have done it without YOU." She then tweeted a photo of cupcakes and noted, "YAY CUPCAKES FOR EVERYONEEEEEEEEEE!"

Perry says she put in a lot of time and effort before becoming a success: "I always use these kind of examples. I was in the dugout for five years....

Rihanna is the latest celebrity to be immortalized in wax at Madame Tussauds. According to People, the stylish body double of the singer was unveiled at the museum's Washington DC location yesterday morning (August 31st). The wax figure is clad in a black lace corset, fitted jacket, black harem pants and black silk heels -- which was modeled after the outfit that RiRi wore to French design house Balmain's show during Paris Fashion Week last October.

While Rihanna wasn't at the reveal, a spokesperson for the museum...

Green Day is recording shows on its current tour for a live album, according to Punknews.org. At a gig in Denver last Saturday (August 28th), frontman Billie Joe Armstrong announced that the concert was being recorded for a live release, then went on to introduce what he said was a new track.

The song, however, was "Cigarettes & Valentines," which was slated to be the title track of an album Green Day was recording back in 2003 as the follow-up to 2000's Warning. According to the band, they decided to abandon the...