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.

OLSEN TO HEATH FEDS: LET'S DEAL  —  DEMANDS IMMUNITY FROM PROBERS  —  Pint-size actress Mary-Kate Olsen has refused to be interviewed by federal investigators probing the accidental drug death of her close friend Heath Ledger unless she receives immunity from prosecution, The Post has learned.

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.

Sunburned Sly Stallone, 62, shows of his buff body... and his wife's not bad either  —  Hollywood hardman Sylvester Stallone appeared to be a touch overcooked as he sported his two giant shoulder tattoos on board retail entrepreneur Philip Green's luxury yacht.

Teens Give It Up for Gossip Girl, Jonas Boys  —  The question now is, can Justin keep up with the Jonases?  —  Hot on the trail of a certain hunky pop star, the Jonas Brothers took home six ceremonial surfboards Sunday at the 10th Annual Teen Choice Awards, aka TC08, giving the fraternal rockers …

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.”

McCain's Celebrity Ad: Frivolous, A Waste Of Money, A Waste Of Time  —  I've been asked again and again for my response to the now infamous McCain celebrity ad.  I actually have three responses.  It is a complete waste of the money John McCain's contributors have donated to his campaign.

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 …

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.

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 …

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.

John McCain In Wedding Crashers  —  Here's a cameo you probably missed the first time round.  Presidental nominee John McCain was in Wedding Crashers.  For real.  —  Vince Vaughn certainly seems impressed by his appearance, mouthing the word “Wow”.  —  ...Not sure if Owen Wilson …

Christina Applegate Battling Breast Cancer  —  Here's to a speedy recovery.  —  Christina Applegate has been diagnosed with an early form of breast cancer, according to a statement released Saturday by the actress' rep.  —  “Benefitting from early detection through a doctor-ordered MRI …