EXCLUSIVE: Selena Gomez's Heartbreak — Justin Bieber's Affair With Rihanna Revealed  —  Life & Style can exclusively reveal the reason Selena Gomez broke up with Justin Bieber after two years of dating: Selena found out that Justin had cheated on her in the early stages of their relationship — with Rihanna.

Cover Story: Brandi Glanville Cheated on Eddie Cibrian Before LeAnn Rimes Affair  —  The plot thickens.  As Us Weekly revealed nearly four years ago, both Eddie Cibrian and LeAnn Rimes cheated on their respective spouses when the Northern Lights costars embarked on an infamous romance in 2009 …

Kim Kardashian's Doctor — Divorce Stress Puts Fetus AT RISK!  —  Kim Kardashian's doctor thinks Kim's unborn baby may be at risk, because of the stress Kris Humphries is causing by dragging out their divorce ... TMZ has learned.  —  Sources familiar with the situation tell TMZ …

‘Honey Boo Boo’ Star Mama June — I LOST 100 LBS!!!  —  I LOST 100 LBS  —  EXCLUSIVE  —  “Honey Boo Boo” star Mama June tells TMZ ... she's dropped more than 100 POUNDS in the past 2 years — and claims she did it all WITHOUT DIETING OR A GYM!  —  The TLC reality superstar says she weighed …

Rihanna to Chris Brown — I'll Ride with You NO MATTER WHAT  —  I'll Ride with You  —  NO MATTER WHAT  —  9:42 AM PT — A rep for Brown says the singer did NOT write the Instagram post ... insinuating that it was drafted by an imposter.  —  You really buyin' that?

Ryan Lochte recreates Nirvana's iconic ‘Nevermind’ album cover: idiotic or funny?  —  Ryan Lochte is featured in the new issue of ESPN The Magazine.  Apparently, the theme of the “Music Issue” is getting star athletes to dress up like rock stars.  And Lochte was chosen to recreate Nirvana's iconic Nevermind album cover.

Exclusive: Adam Brody, Leighton Meester Dating!  —  Credit: Henry S. Dziekan III/WireImage.com  —  It's like a teenage dream come true!  Adam Brody and Leighton Meester, both veterans of the teen drama genre, have been secretly dating for weeks, sources confirm to Us Weekly.

Beyoncé's Publicist Wants to Erase These Six Unflattering Photos from the Internet  —  Yesterday, we discovered that Kanye West had apparently forced the photo wire service Getty to remove a series of photos of himself in a skirt.  Today, Beyoncé's publicist is going around trying …

Matthew McConaughey Better Manscape!  Magic Mike: The Musical Includes Real LAP DANCES!  —  Sweet chocolate pants-creaming Jesus, this news is GLORIOUS!  —  Not only is the most underrated film of our generation getting a much-needed Broadway adaptation, but Magic Mike: The Musical will be more, ahem, hands-on than we ever expected!

Leah Messer, Teen Mom 2 Star, Gives Birth to Baby Girl!  —  Leah Messer is a third-time mom!  The Teen Mom 2 star welcomed her first child, a baby girl, with new husband Jeremy Calvert on Monday, Feb. 4, a source confirms to Us Weekly.  —  “Yes, the time is near,” the MTV star tweeted Sunday of her daughter's impending arrival.

Twilight Heartbreak On The Horizon!  Kristen Stewart Planning To Dump Robert Pattinson, Says Source  —  Kristen Stewart is planning to end her rekindled romance with Robert Pattinson, as she believes he is no longer committed to dating her, a source close to the actress tells RadarOnline.com exclusively.

Miguel Ferrer To Become Regular On ‘NCIS: LA’ And Also Co-Star In ‘NCIS: LA’ Spinoff  —  EXCLUSIVE: Miguel Ferrer is getting a major promotion on NCIS: LA. Ferrer, who joined the series as a recurring midway through last season, is being upped to regular effective next fall.

Snoop Dogg Gets the Party Started with Ben Affleck and Jennifer Lawrence  —  Ben Affleck and Jennifer Lawrence, inset: Snoop Lion (Dogg)  —  Guess the “O” in “O.G.” stands for Oscar.  —  Ben Affleck and Jennifer Lawrence both attended the Hollywood Reporter's Nominees' Night 2013 at Spago in Beverly Hills on Monday.

Katie Holmes Shares Valentine's Day Plans and Traditions  —  AT 6:00AM BY BREANNE L. HELDMAN, OMG!  —  Actress Katie Holmes attends “The Other Place” Broadway opening night at Samuel J. Friedman Theatre on January 10, 2013 in New York City.  —  For many recent divorcees, Valentine's Day is a dreaded holiday.

Kristin Cavallari: Camden's Putting His New Teeth to Good Use  —  Brian Lindensmith/PatrickMcMullan.com/ Sipa  —  Kristin Cavallari is one lucky mom!  —  The former reality star says that even though son Camden Jack is currently teething, he hasn't been crying at all.