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.

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.

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.

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 …

Lindsay Lohan Tested Positive for Alcohol After Rehab  —  Lindsay Lohan drank alcohol the night she scuffled with a Betty Ford employee and failed a random alcohol test after she left rehab, according to a probation report.  —  The report, released Wednesday after her no-contest plea …

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 …

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.

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.

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!

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 …

EXCLUSIVE PHOTOS - Lindsay Leaves Downtown Women's Center After Performing Community Service  —  Lookin' good, Lindsay!  Dressed more conservatively than we've seen her in awhile, Ms. Lohan made her way out of the Downtown Women's Center in LA after fulfilling more of her community service.

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?

MYSTERY MAN REVEALED: Hugh Grant Almost Replaced Charlie Sheen On ‘Men’  —  EXCLUSIVE: I've learned that one-time bad boy Hugh Grant was deep into final negotiations to replace Charlie Sheen as the lead on Two And A Half Men until he pulled out last night at the last minute due to creative differences.

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 and Jada Pinkett Smith are the guests on last show  —  Cementing their place in history as two of Oprah Winfrey's favorite guests, Will Smith and wife Jada Pinkett Smith will appear May 25 on the daytime talk queen's final show, Flash has learned exclusively.

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 …

Amber Rose Trash Talks Ex-Boyfriend Kanye West  —  She's currently dating Wiz Khalifa, the man who raps about colors.  Do you think she downgraded?  —  Amber Rose says insists her new boyfriend is not a “downgrade” from Kanye West.  —  The model split from the ‘Stronger’ hitmaker last year …