BACK IN REHAB  —  Charlie Sheen's ex-wife Brooke Mueller has once again checked herself into rehab for substance abuse — sources close to Brooke tell TMZ.  —  According to sources, Brooke entered the undisclosed in-patient treatment facility a few weeks ago, following a puzzling visit to Charlie.

Justin Bieber Knocked Out Cold in Paris  —  Knocked Out Cold  —  In Paris  —  EXCLUSIVE  —  Justin Bieber was knocked out cold after running into a wall of glass during a concert in Paris.  —  We just spoke with Justin, who said he was performing on stage, and in between songs he walked backstage and hit the glass.

Bulging biceps and cheerleader outfits!  Madonna kicks off her MDNA world tour in Israel and son Rocco joins her onstage too  —  Tel Aviv was transformed into a land of razzamatazz tonight when Madonna took to the stage to kick off her 80 nation MDNA world tour.

Exclusive Video: Simon Cowell Wonders If Hiring Britney Spears for X Factor Was a “Mistake”  —  Oops, she did it again: Britney Spears is back to behaving badly!  —  An insider says The X Factor creator Simon Cowell is already anxious about Spears' unpredictable behavior.

Kardashian Sisters Snubbing Brother Brandon By Skipping His Wedding?  —  Kendall, Kylie and Kris Jenner flew to Hawaii for Brandon Jenner's nuptials — but where were Kim, Kourtney and Khloe?  —  The entire Jenner family united in Hawaii on May 31 for Brandon Jenner's wedding.

Brian McKnight Drops New ‘Anal’ Song — Way Dirtier Than ‘P**sy’ Tune  —  Dropping ‘Anal’ New Song  —  DIRTIER Than ‘P**sy’ Tune  —  EXCLUSIVE  —  We didn't think it was possible, but Brian McKnight's new track makes his “p**sy” song sound like a “Barney” jingle — and of course TMZ has obtained a clip of the new jam.

DC reveals gay superhero: James Robinson discusses the new (old) Green Lantern  —  Earlier this month, DC co-publisher Dan DiDio revealed to a convention audience in England a heretofore heterosexual DC superhero would be coming out of the closet.  DiDio kept mum about the hero's identity …

Russell Brand Is Proud of His ‘Sexy’ Rock of Ages Kiss with Alec Baldwin  —  Alec Baldwin (left) and Russell Brand, in Rock of Ages  —  There was quite the bromance brewing between Russell Brand and Alec Baldwin during the filming of Rock of Ages.  —  Brand, 36, who had nothing …

Kate Walsh Poised To Depart ABC's ‘Private Practice’ After 13 More Episodes  —  EXCLUSIVE: It looks like Dr. Addison Montgomery, who left Seattle Grace five years ago to move to Los Angeles, will be packing again.  I've learned that Private Practice star Kate Walsh plans to leave the medical drama …

Brooklyn Nets Star DeShawn Stevenson — ATM in My Kitchen Was Rob Dyrdek's Idea!!!  —  ATM in My Kitchen  —  Was Rob Dyrdek's Idea!!!  —  EXCLUSIVE  —  Brooklyn Nets guard DeShawn Stevenson isn't the first person to put an ATM inside his house — in fact, DeShawn tells TMZ …

Wickedly Good Nail Polishes Inspired By ‘Snow White and the Huntsman’  —  Feeling sweet like Snow White?  Or wicked like The Evil Queen?  Either way, we have the perfect nail polish for you inspired by the epic action-adventure Snow White and the Huntsman!

Chelsea Handler Undergoes Knee Surgery  —  Even in pain, Chelsea Handler keeps 'em laughing.  —  Undergoing knee surgery Thursday, the E! comedienne, 37, was forced to miss that night's taping of her late night series Chelsea Lately, but took to Twitter to assure fans she was OK.

David Beckham Hits the Town With Stella and Talks More Kids!  —  David Beckham had a fun night out in London yesterday, dining at the Cow pub with his best pal, Dave Gardner, as well as Stella McCartney and her husband, Alasdhair Willis.  The soccer star has been at home in the UK for the past week …

He moves like Jagger!  Adam Levine shares a kiss with Victoria's Secret beauty Behati Prinsloo... a model friend of his ex Anne V  —  He split with his girlfriend Victoria's Secret model Anne Vyalitsyna only two months ago.  —  But ladies man Adam Levine has clearly moved on - with a beauty who is supposed to be friends with his ex.

Anne Vyalitsyna joins ‘Die Hard’ sequel  —  Sports Illustrated model makes acting debut  —  Anne V. has joined the cast of Fox's “A Good Day to Die Hard,” starring Bruce Willis and Jai Courtney.  —  John Moore is directing the Skip Woods-scripted sequel, which Alex Young is producing.

Francesca Eastwood — Burnt Birkin Wasn't MINE!!!  —  Burnt Birkin Wasn't MINE!!!  —  EXCLUSIVE  —  Clint Eastwood's daughter's been taking serious heat — as in death threats — for burning a $100,000 Birkin handbag just for the art of it ... but now Francesca Eastwood wants everyone to know it wasn't hers.

Marvel's The Avengers Teases a 10-Disc Blu-ray Release  —  Still doing incredible business in theaters, Marvel's The Avengers is on its way to DVD and Blu-ray later this year.  Though an official date is still unconfirmed, an interesting tease has shown up Amazon for something called the …

Cumberbatch joins ‘12 Years a Slave’  —  ‘Sherlock’ star to play plantation owner  —  Benedict Cumberbatch, star of PBS skein “Sherlock,” is set to join the cast of New Regency's “12 Years a Slave.”  —  Steve McQueen is directing the pic starring Chiwetel Ejiofor, Michael Fassbender and Brad Pitt.

Party-bus driver drops assault case against Matthew Fox — EXCLUSIVE  —  A Cleveland bus driver who claimed that a drunken Matthew Fox assaulted her last August has withdrawn her lawsuit against the Lost actor.  Heather Bormann had told authorities that Fox struck her repeatedly in the chest …