Biographer: Oprah's ‘family secret’ is half-sister she never met before  —  Oprah Winfrey is calling it “the miracle of all miracles” and “news that literally shook me to my core.”  On Monday's show, according to her unauthorized biographer, the world will be introduced to the half-sister Oprah never knew she had.

DWTS' Aaron Carter Enters Rehab  —  The 23-year-old former Dancing With the Stars contestant checked into a private Southern California facility earlier this month, says the source  —  The source reveals that Carter's choice to go to rehab was his move to “finally get help” and not a court-mandated decision.

Jack LaLanne, Founder of Modern Fitness Movement, Dies at 96  —  Jack LaLanne, whose obsession with grueling workouts and good nutrition, complemented by a salesman's gift, brought him recognition as the founder of the modern physical fitness movement, died Sunday afternoon at his home in Morro Bay, Calif. He was 96.

Tiffany Outs ‘NKOTB’ Member Jonathan Knight  —  Rumors have surfaced in the past regarding ‘New Kids on the Block member’ Jonathan Knight's sexuality, but the pop performer has never admitted to being gay.  —  However, '80s teen queen Tiffany told millions of TV viewers last Thursday that Knight indeed is gay.

Jewel and Ty Murray: We're Having a Boy!  —  Jewel and Ty Murray can finally start painting their nursery.  —  “We would have been happy either way, of course, but we are so excited to be having a little boy,” the singer, 36, tells PEOPLE.  —  The couple, who are expecting their first child this summer …

Britney Spears Returning to ‘Edgy’ Sound on New Album  —  While Britney Spears's new single, “Hold It Against Me,” may have provided an upbeat preview of her new album, what will the rest of the work sound like?  —  “It's way more edgy than the last album,” songwriter Claude Kelly …

Kate Hudson Heads to London With Her Baby Bump and Boyfriend  —  Kate Hudson arrived at London's Heathrow airport this morning with her boyfriend Matthew Bellamy.  The duo have been out of the spotlight since Christmas, when they joined her family for a holiday vacation in Aspen.

Kevin Smith Slams Bruce Willis in Interview  —  Director Kevin Smith has an opinion of Bruce Willis, and he's not holding back.  —  According to the Daily Mail, Smith recently went on the ‘WTF with Marc Maron’ podcast and slammed Willis' committment and attitude while shooting 2010's ‘Cop Out,’ which Smith directed.

EXCLUSIVE INTERVIEW: Madonna's Fascination With Young Boyfriends Is ‘Creepy,’ Says Brother Christopher Ciccone  —  Madonna's brother Christopher Ciccone has admitted that his superstar sister's obsession with younger men is in danger of becoming “creepy”, RadarOnline.com is exclusively reporting.

Elisabetta Canalis Learns on CNN She'll Never Be Mrs. Clooney  —  When George Clooney sat down for an interview with CNN's Piers Morgan, he made it clear to the world that he doesn't want to get married again.  Too bad he forgot to mention this to longtime girlfriend, Elisabetta Canalis.

Lindsay Lohan — I'm Done Clubbing!  (Seriously)  —  Stop us if you heard this one before — Lindsay Lohan is telling her friends she is never clubbing again.  As in forever.  Forever ever.  For reals.  Stop laughing.  —  Sources close to LiLo tell TMZ she is “completely over the club scene” …

Steve Harvey Attacked by Ex-Wife in Series of YouTube Videos  —  Steve Harvey's ex-wife posted several videos on YouTube this weekend in which she alleges that the comedian and author was a chronic cheater in their marriage who then took their son and left her with nothing after they split.

leighton meester: nylon cover girl  —  “I'm a grown woman and sometimes I might be a little bit fat!”  —  Thanks to her magnetic screen presence and weekly must-watch TV show, it's never been hard to watch Leighton Meester.  But thanks to two back-to-back movies - Country Strong, out now …

Chaz Bono Had Breast Removal Surgery, Wants to Look Like Michael Chiklis  —  Chaz Bono may have been born a girl, but he always felt he was a boy.  —  As everyone knows by now, Chaz is Sonny and Cher's offspring, formerly known as Chastity.  —  “I've hated my body since puberty,” …

Jen Aniston, Kristen Stewart, Miley Vie for “Worst Actress” Award  —  Jennifer Aniston might get a new gold statue for her mantle this awards season — a Razzie, that is.  —  The star, 41, is among the nominees in the 31st Annual Razzie Awards, which honor the previous year's low-lights in movies.

EXCLUSIVE: Sneak Peek at Rihanna's New “S&M” Video [PHOTOS]  —  Rihanna rocks a Playboy bunny-inspired outfit in an all new still shot from her new video for “S&M” that was exclusively released to RyanSeacrest.com Monday.  —  The sneak peek at the video comes after Rihanna tweeted the first look …