‘American Pie’ Star Busted for DUI  —  TMZ has learned Chris Klein — who played Oz in “American Pie” — was arrested early this morning on suspicion of DUI.  —  Law enforcement sources tell us a CHP officer stopped Klein on the 101 freeway in Los Angeles at 3:13AM.

Exclusive: Al Gore Cheats with Larry David's Ex  —  Al Gore's split from wife Tipper after 40 years of marriage was a shock to everyone who thought theirs was the ideal marriage.  Now Star can exclusively reveal that the former Vice President was having an affair with Larry David's ex-wife — for the past two years!

EXCLUSIVE: Megan Fox Is Engaged Again!  —  Megan Fox is engaged again, reports the new Us Weekly (on newsstands now).  —  On-again beau Brian Austin Green popped the question to Fox, 24, June 1.  —  But in all the excitement, the happy couple somehow lost the ring, sources tell Us Weekly.

Miley Cyrus upskirt shot: Child porn?  —  Blogger Perez Hilton posts a link to an alleged upskirt photo of the 17-year-old — and could face serious charges  —  Perez Hilton has built a thriving career out of offensive behavior: He's called countless female celebrities bitches, hos …

Brooke Mueller Headed Back to Rehab  —  Sources tell TMZ Brooke Mueller has fallen off the wagon again and she is telling people she's checking into a rehab facility for 30 days.  —  Sources say Brooke has been receiving ongoing treatment for substance abuse at her home …

EXCLUSIVE: Source: Levi Johnston, Bristol Palin Are Back On!  —  Despite all the drama, baby Tripp Johnston's estranged parents are making it work after all.  —  Although Bristol Palin and Levi Johnston broke off their engagement in March 2009, an insider tells UsMagazine.com that relations …

Cameron Diaz Comes Clean About Alex Rodriguez  —  In the July issue of Playboy, Cameron Diaz opens up about the men in her life.  —  First on the list: Alex Rodriguez, with whom she enjoyed romantic dinners and whose NYC apartment she was once spotted leaving one morning in May.

‘Jersey Shore’ — Half the Cast on Chopping Block  —  The oil-soaked handwriting is on the wall ... TMZ has learned “Jersey Shore” is about to lose 4 familiar, overly-tanned faces in Season 3 ... to make room for 4 fresh overly-tanned faces.  —  Our spies tell us ... the footage …

Tori Spelling: Why I Got So Skinny  —  Tori Spelling's wafer-thin frame has been the topic of much debate — and in her new book, TerriTORI, she reveals why she shed so much weight.  —  According to USA Today, Spelling, 37, blames swine flu, stomach pain, migraines and nerve problems for her weight loss.

HBO Greenlights ‘Hemingway & Gellhorn’ Starring Clive Owen And Nicole Kidman  —  EXCLUSIVE: It took James Gandolfini 6 years to get the story of Ernest Hemingway and Martha Gellhorn to the screen.  Now HBO has just given the green light to Hemingway & Gellhorn, an original movie produced by Gandolfini …

Sony Pics High-Kicking ‘Karate Kid’ Sequel  —  After The Karate Kid's opening weekend gross of $56 million blew past its $40 million budget, a sequel to the Jaden Smith-Jackie Chan-starrer seemed inevitable.  Sure enough, agency sources tell me that Sony's Columbia Pictures execs are meeting …

Tiffani Thiessen Welcomes a Baby Girl  —  Tiffani Thiessen and husband Brady Smith have a reason to celebrate!  —  The couple welcomed their first child, daughter Harper Renn Smith, on Tuesday in Los Angeles, her rep tells PEOPLE exclusively.  —  Baby Harper, who weighed in at 8 lbs., 3 oz., is “doing great,” as are the new parents.

Elton John ‘a Little Surprised’ at Rush Limbaugh Wedding Invite  —  Add Elton John to those who were not expecting him to get an invite to Rush Limbaugh's wedding.  —  “To put it in Elton's exact words, when he got the invitation, he was ‘a little surprised,’ ” his partner David Furnish told PEOPLE …

Jennifer Love Hewitt Advises Girls to ‘Love the Way You Look’  —  In a world that's overly focused on body image, Jennifer Love Hewitt is urging young women not to obsess about weight - because it's simply not worth it.  —  “When I meet young girls, I'm always like, ‘Just do me one favor,’ ” she tells PEOPLE in its new issue.

Doug Liman ponders ‘All You Need Is Kill’  —  Doug Liman's name has bubbled to the top to potentially direct “All You Need Is Kill” at Warner Bros. The development sets up a potential internal war over the helmer's services.  —  Liman jumped aboard Warners' adaptation of “The Three Musketeers” in early May.

Gabourey Sidibe's Mother Impresses on 'America's Got Talent'  —  Oscar-nominated actress Gabourey Sidibe isn't the only talent in the family.  —  Her mother, Alice Tan Ridley, is a well-known subway performer with a huge, booming singing voice.  And Ridley used her vocal chords to wow the judges on 'America's Got Talent.'

Police Cancel Hanson, Drake Concert in NYC Over Crowd Concerns  —  A free concert by pop band Hanson and up-and-coming Canadian rapper Drake was canceled Tuesday after twice as many people as anticipated showed up and many became unruly, police said.  —  The show started at about 6 PM …