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.

Lady Gaga's Heels Get the Shaft from ‘American Idol’  —  Last night fans got to watch Lady Gaga mentor the “American Idol” contestants, but one thing they didn't see ... her clear plastic penis heels.  —  When Gaga appeared on the show, producers smacked an “Idol” logo over her sexually explicit stilettos …

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.

Season 2 wrap.  A remedy to the seven year itch.  Finally!  —  Season 2 wrap.  A remedy to the seven year itch.  Finally!

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 …

Jon Gosselin Opens Up About Real Life: This Is My Last Interview  —  Once upon a time, Jon Gosselin was just a regular dad, struggling to raise eight kids with his wife, Kate, in suburban Pennsylvania.  And then the camera crew arrived.  But almost two years after he was dropped from the 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.

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 …

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?

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.

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.

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 …

Fox's ‘Breaking In’ To Get Another Chance?  —  Can Breaking In come back from the dead a second time?  Well, it is possible.  I hear that Fox may reconsider the bombshell Tuesday night cancellation of the midseason comedy starring Christian Slater.  Fox is in discussions with Breaking …

EXCLUSIVE: Real World's Dustin Zito: No Regrets About Gay Porn Past  —  The Real World: Las Vegas' Dustin Zito is living life with no regrets.  —  In fact, even after news that he had shot sexually explicit videos with men rocked the MTV penthouse, Zito tells Us Weekly he'd do it do it all over again.

This Week's Cover: The stars of ‘The Hangover Part II’ share wild tales from the set  —  Having delivered the craziest morning-after in cinematic history with 2009′s The Hangover, the team behind the Hangover Part II knew they needed to up the ante for the sequel.

A Second Shot to Have the Best Night of Their Lives  —  GREEN BAY, Wis. — The last time Ashley Moeller shimmied into a satin dress and glittering high heels for the prom, her father issued a stern warning: be home by 11 p.m. sharp.  He waited at the door, careful to smell her breath for even the slightest trace of alcohol.

Blonder is the new blonde!  —  Just a few weeks after Emma Roberts brightened up her dark blonde hair to an almost platinum shade, another star is showing off a much lighter look.  —  PHOTOS: Celebs who are natural blondes  —  Rachel McAdams, who has has experimented with everything …

Marlee Matlin Is Paying $50,000 in Back Taxes  —  Marlee Matlin is proving she has a head for business as a contestant on Celebrity Apprentice this season.  But like many Americans, the actress has been affected by the economy and the recession.  —  Matlin, 45, confirms to PEOPLE …

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.

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 …

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” …

Nick Cannon Dishes on Mariah, New Twins, and First Comedy Special  —  Nick Cannon is still getting used to being a tabloid headline all the time: First for his much-publicized marriage to singer Mariah Carey, 10 years his senior; then for expecting babies for what felt like an eternity …

Ashton Kutcher Latest Name To Surface In ‘Two and a Half Men’ Speculation  —  Heading into next week's upfronts in New York City, one of TV's biggest questions is in what form will Two and a Half Men continue and who will replace Charlie Sheen?  —  Earlier this week, Deadline.com reported …

De Niro, Keaton topline ‘Big Wedding’  —  Katherine Heigl, Amanda Seyfried also star in indie comedy  —  Exclusive: Robert De Niro, Diane Keaton, Katherine Heigl and Amanda Seyfried are set to star in the indie comedy “Gently Down the Stream.”  —  Justin Zackham ("The Bucket List") …

Fortunate Son  —  It took him four decades to transition from Sonny and Cher's adorable daughter to the man he knew he was inside.  Now, with his inspiring new memoir and candid documentary, Chaz is happy at last and intends to make his story count.  —  Photos by Patrick Fraser