Meet Vivienne & Knox Jolie-Pitt  —  They are just 3 weeks old, but twins Knox Léon and Vivienne Marcheline are about to take the world by storm.  —  In an exclusive interview and photos, Brad Pitt and Angelina Jolie offer PEOPLE an intimate look at their growing family.

Christina Applegate Diagnosed With Breast Cancer  —  Christina Applegate has been diagnosed with breast cancer, a rep for the 36-year-old Samantha Who?  Emmy nominee announced late Saturday.  —  In full, the spokesperson's statement said:  —  “Christina Applegate was diagnosed with an early form of breast cancer.

TYRA'S DRESS-UP  —  TYRA Banks - the mastermind of gimmicks - is at it again.  Banks - who once had her breasts examined on TV to show everybody they were “real” - is now dressing up as Michelle Obama for the September cover of Harper's Bazaar.  “It's a full makeover,” said one spy.

Bernie Mac ‘very, very critical,’ source says  —  SUN-TIMES STAFF REPORTS  —  Comedian Bernie Mac was in “very, very critical” condition late Saturday at a Chicago hospital, according to a Chicago Sun-Times source who knows the comedian's family.  —  The revelation came …

The Afflecks & Damons: Baby Bumps for Obama  —  Expectant couples Ben Affleck & Jennifer Garner and Matt Damon & wife Luciana turned out for a Miami fundraiser Saturday for Barack Obama.  —  Garner, sporting a small baby bump, looked radiant in a chic short black cocktail dress and sexy high-heeled sandals.

Happy Homecoming, Madonna  —  Getting back to her roots!  —  On Saturday, Madonna attended the Traverse City Film Festival, a Michigan film festival founded by fellow native Michael Moore.  —  She's looking better but still.....tired.  —  Madonna was there to introduce her Malawi orphan documentary …

Reese and Jake: We Are Not Engaged  —  Reps for Reese Witherspoon and Jake Gyllenhaal are denying tabloid reports that the couple are engaged.  —  “They are not engaged, getting married or any of the reports,” the reps tell PEOPLE exclusively, calling the reports “lies.”

Miley Cyrus Leaked Pictures Continue  —  Earlier this weekend, new pictures of Miley Cyrus leaked out onto the Internets thanks to Trainreq.  It would seem these leaked pictures of Miley are endless!  —  Miley, 15, is also back with her backup dancer BFF Mandy Jiroux, 20.

Tearful Sienna in desperate bid to win back billionaire oil heir lover after he runs back to wife  —  Sienna Miller is said to be ‘devastated’ after her married lover ran home to his wife and four children.  —  Sienna, 26, has been furiously calling and texting oil fortune heir Balthazar Getty …

BATMAN WINS AGAIN!  ‘The Dark Knight’ surges 37% Saturday to upset ‘Mummy 3’ for weekend crown; Caped Crusader should pass $400M domestic on Monday and projected to reach $480M in the US; Costner's $21M bet on ‘Swing Vote’ goes bust!  —  SUNDAY 2:00 p.m. (Pacific): This weekend was scheduled …