Jay-Z — I Refuse to Clap for Chris Brown  —  It was the standout performance of the MTV VMAs — Chris Brown dancing his face off — but while everyone from Kanye to Bieber stood up and cheered ... Jay-Z refused to even crack a smile.  —  Of course, Jay is the man who discovered Rihanna — and they're still VERY tight.

Matthew Fox Detained — Accused of Assaulting Woman  —  Matthew Fox was detained by cops in Cleveland, Ohio Saturday night after allegedly assaulting a woman outside of a bar ... TMZ has learned.  —  Law enforcement sources at the scene tell us ... the “Lost” star allegedly tried to enter a party bus …

EXCLUSIVE: Lady Gaga Took Male Alter-Ego to the Limit By Using Male Restrooms  —  Strange songstress Lady Gaga prompted many jaws to drop during the MTV Video Music Awards on Sunday night when she channeled her foul-mouthed, whisky-drinking, chain-smoking male alter-ago, Jo Calderone.  —  “She left me!

EXCLUSIVE: Kim Kardashian: Why Kris Humphries Bailed on the VMAs  —  Where's Kris?  —  Kim Kardashian was without her better half at Sunday's MTV Video Music Awards in L.A. Instead of hubby Kris Humphries (they got hitched Aug. 20 and just got back from a quickie honeymoon in Italy) …

GWEN SHOWS OFF HER ROCKIN' 41-YEAR-OLD BIKINI BOD  —  Gwen Stefani hit the beach in Malibu Sunday letting her milky white skin bake in the intense Southern California sun.  Check out the 41-year-old No Doubt singer's sexy bikini bod!  —  Wearing a tiny black bikini top …

Justin Bieber to Selena Gomez: 'My snake's name is Johnson.'  —  In the midst of an otherwise boring pre-show, Justin Bieber swung in for a quick one-on-one interview with his girlfriend, Selena Gomez.  Gomez asked him to describe his outfit.  Bieber: “I have a snake.  I have red pants.

Beyoncé Pregnancy Affects ‘A Star Is Born’  —  EXCLUSIVE: I've learned that Warner Bros was hoping to start production on Clint Eastwood's musical remake of A Star Is Born as early as February 2012.  But now insiders tell me it “could push” because Beyoncé announced her pregnancy tonight at MTV's VMAs.

Hilary Duff Banked $100K ... For NOT Appearing in Movie  —  A preggo Hilary Duff scored a GIANT golden parachute after getting dumped from the new “Bonnie and Clyde” movie — a severance deal worth $100,000 ... all for doing nothing.  —  Sources close to production tell TMZ …

Chelsea Handler Got Caught Doing The Bad S**t  —  Yes, Chelsea Handler's nostrils look like they work most nights sucking up what's ever good and she's got the sweats that a bitch usually gets when the last line has been snorted up and her dealer isn't answering his main line, but that doesn't mean s**t!