50 Cent has defended pal Eminem over weight gain rumors. The rapper superstar denies the "Slim Shady" rapper has gained weight saying he's still in great shape.

He tells MTV, "Em is in shape right now. He looks good. I seen him in Detroit. He's gonna look real good when you see him return."

Eminem is to perform at Nelson Mandela's 90th birthday concert.

The 'Stan' rapper has been added to the line-up for the former South African President's milestone celebrations at London's Hyde Park after Queen rocker Brian May persuaded him to come out of retirement.

There may be a new hot couple to tackle the Hollywood scene. Rumors are spreading like wildfire that pop superstar Mariah Carey is dating actor and rapper Nick Cannon. According to the National Inquirer, the pair reportedly hooked up after Cannon was hired to appear in Carey's new music video, E=MC2.

The source to the Inquirer also said that Carey is looking to keep her new relationship on the down low saying, "Mariah is the master when it comes to keeping her relationship secret. Even though she's a big star, she likes to keep her private life to herself."

Mariah Carey doesn't trust men.

The single 37-year-old singer - whose marriage to record executive Tommy Mottola ended in 1998 - finds it difficult to form new relationships because she is paranoid potential lovers will post compromising footage of her on the internet.

Will Smith is to host a concert celebrating Nelson Mandela's 90th birthday this summer.

The Hollywood actor and his wife Jada Pinkett Smith have agreed to front the star-studded event in London's Hyde Park on June 27 after being asked by the iconic former South African leader.

Eminem slams his autobiography publisher. The rapper superstar's label, Interscope Records, has lashed out at Orion Publishing Group, the U.K-based publisher who will handle his autobiography, for talking hastily about his book.

"It's unfortunate that someone who does not have intimate knowledge of [the project] felt compelled to jump the gun on announcing it by delivering partial and inaccurate information," the label says in a statement adding that there is no firm release date of the book.