Exclusive: Leo & Bar split  —  Leonardo DiCaprio and model Bar Refaeli have officially called it quits, Page Six has exclusively learned.  The pair broke up late last week after going through a rough patch.  “It was amicable, they're still friends and they are still talking,” said a source close to the couple.

Hayden Panettiere and Wladimir Klitschko End Their Romance  —  Hayden Panettiere and Wladimir Klitschko  —  After two years of dating, Hayden Panettiere and Ukrainian heavyweight boxing champion Wladmir Klitschko are calling it quits, PEOPLE has learned exclusively.

Which ‘American Idol’ Contestant Made 'Lady Gaga's Yaya Go La-La,' According To Steven Tyler?  —  LOS ANGELES, Calif. — The “American Idol” final four came face to face with Lady Gaga this week on the reality television competition and she certainly helped shake things up.

Celebrity Herpes Lawsuit Triggers Sex Tape Frenzy  —  TMZ has learned ... the person who is suing an internationally famous celebrity for intentionally transmitting herpes has multiple videos of the sex acts that allegedly transmitted the disease — and now there's a bidding war for the tapes.

Mary Tyler Moore Set for Brain Surgery  —  Mary Tyler Moore and Dick Van Dyke, on the set of the Rachael Ray Show, May 5, 2011  —  Mary Tyler Moore has elected to undergo surgery to remove a meningioma, a benign tumor of the lining tissue of the brain, her rep tells PEOPLE exclusively.

Angelina Jolie on Bringing the Kids to Cannes, Finding Inner Peace, and Maddox and Pax's Martial Arts!  —  Angelina Jolie joined her costars Jack Black and Dustin Hoffman to bring Kung Fu Panda 2 to the Cannes Film Festival this morning!  The movie is screening out of competition …

Jessica Alba in a Bikini (Warning: May Contain Pregnancy)  —  Here's an extremely pregnant Jessica Alba vacationing in Mexico yesterday demonstrating just how cheap Cash Warren is.  Dude, if you wanted your wife to have bigger breasts, decent implants are, what?  Ten grand?

EXCLUSIVE: Jennifer Aniston May Go Topless in Horrible Bosses  —  After years of posing naked — but playfully concealing her breasts — Jennifer Aniston, 42, may finally flash her assets in the raunchy comedy Horrible Bosses.  —  “She shot a topless scene, but produces aren't sure if they'll use it …

Will Smith forced to move giant trailer as he cracks up at controversy  —  He may be the Fresh Prince of Bel-Air, but this is Bloomberg's kingdom.  —  At the command of Hizzoner — and amid intense pressure from furious residents — egomaniac actor Will Smith begrudgingly moved …

Teen Mom 2's Jenelle Evans Enters Rehab  —  Teen Mom 2 star Jenelle Evans has entered a rehab program in Malibu, a source confirms to Us Weekly.  —  “She is clean right now and has been that way for several weeks,” the insider says.  “She's doing this program to help her cope with all the stress …

Sebastian Bach Arrested for MARIJUANA Possession  —  For the second time in 6 months ... former Skid Row frontman Sebastian Bach has been arrested for weed — this time, Bach was popped for marijuana possession in New Jersey.  —  TMZ has confirmed ... Bach was pulled over for “failing to keep right” …

Angelina Jolie Explains New Tattoo: It's for Brad!  —  Angelina Jolie sparked adoption rumors earlier this month when she was photographed with a new tattoo while on a goodwill trip to the Tunisia-Libya border.  The photograph showed a new set of map coordinates on her arm …

Real Housewives of Orange County's Alexis Bellino Reveals Eating Disorder: “It's Not a Pretty Disease”  —  Alexis Bellino is sharing a dark secret.  —  “I suffered from both anorexia and bulimia,” the svelte star of The Real Housewives of Orange County told us yesterday.

Tom Sizemore — Questioned by Cops Over Missing GF  —  about a minute ago by TMZ Staff  —  Tom Sizemore's girlfriend went missing over a month ago — and TMZ has learned, the actor was recently questioned in connection with the case.  —  Law enforcement sources tell TMZ …

Britney Spears Shows Southern Hospitality as Host of Charity Dinner  —  It's not too often that Britney Spears hits the red carpet these days, but the singer stepped out with boyfriend Jason Trawick Wednesday night when she hosted a charity dinner in Beverly Hills.

The Situation's Dad — I Want a Reality Show!  —  It's barely been a day since he broadcast his expletive-filled diatribe across the Internet — but TMZ has learned ... The Situation's dad Frank Sorrentino already has plans in place to pursue a reality show.

Mom Gives Botox to 8-Year-Old Daughter: How Young Is Too Young?  —  Botox injections and leg waxing on an 8-year-old girl, all in the name of beauty pageant success, all done by her own mom.  —  It sounds too unreal to be true, like a storyline straight out of “When Stage Moms Go Bad.”  —  It's not.

Bethenny Frankel Sued by Ex-Manager for $100 Million (Exclusive) … Reality star turned liquor mogul Bethenny Frankel has been sued by her ex-managers, who claim they helped broker her pairing with the lucrative Skinnygirl cocktail brand and were cut out of the rich deal that followed.

How Much Did Pippa Middleton's ‘Friends’ Make on Her Topless Pics?  —  Kate Middleton may be in line to be the Queen of England, but her younger sister Pippa Middleton is where the money's at.  Just ask her so-called friends, who have sold a string of topless and body baring snaps …