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.

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 …

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 …

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.

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 …

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.

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” …

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 …

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.

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 …

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.

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 …

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 …

Gwyneth Paltrow Grows Salvia in Her Garden  —  Is this where Miley Cyrus got her stash?  Gwyneth Paltrow's latest blog post on her healthy-living website GOOP.com, reveals her garden has a little something extra: salvia!  The Oscar winning actress expressed:  —  “We've got 4 varieties [of sage] going this year!

Prince To Staff: Whitney's Welcome at My Shows!  —  Apparently, Prince had no idea Whitney Houston had been blacklisted from his concerts ... and now, The Purple One wants everyone to know “she's always welcome 4 all of eternity.”  —  TMZ had confirmed the ban with several sources connected …

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.