A morning mix of entertainment headlines...

Rihanna in 2009 at the Clive David pre-Grammy party that was held the same night Chris Brown later assaulted her. (Matt Sayles/AP)

Los Angeles prosecutors have dropped their effort to bring charges against police officers accused of selling a photo of a battered Rihanna to TMZ. The picture of the injured pop star, leaked to the gossip Web site in 2009 in the wake of the Chris Brown assault, is believed to have been sold to TMZ by officers who, according to one report, pocketed $62,000 from the transaction. But prosecutors decided quietly back in March that they don’t have the evidence they need to prove it. (L.A. Times)

Speaking of TMZ, Charlie Sheen tells the site that he may file a defamation lawsuit over an Us Weekly story that alleged he trashed a hotel room last weekend at a New York Ritz-Carlton. He is determined to find the source responsible for keeping this story in the news cycle ... er, I mean, spreading such lies. (TMZ)

Steven Soderbergh and Channing Tatum are onboard to produce the Broadway musical version of “Magic Mike,” already slated for bachelorette party bookings in the summer of 2013. (Vulture)

Breaking news: Heidi Montag regrets getting liposuction, mainly because it gave her cellulite. (In Touch via Jezebel)

Johnny Depp and Amber Heard are “100-percent dating” according to a source who remains 100-percent unidentified. (Us Weekly)

The Supreme Court’s health-care ruling has prompted many questions. The most important one, obviously: How can we make this about Ryan Gosling? Fortunately, Huff Post Women took care of that for us. (Huffington Post)

The Academy has made some changes to the rules for certain Oscar categories. Among them: Hairstylists can now be recognized in the make-up artist category. (Associated Press)

Cracked has composed a list of six songs that people consistently attribute to the wrong artist. Do this many people think “Mr. Blue Sky” is by the Beatles instead of ELO? (Cracked via Fark)

Watch the trailer for “Dora the Explorer: The Search for the Infinity Orb,” a live-action version of the Nickelodeon cartoon, starring Ariel Winter of “Modern Family” as Dora. (P.S. It’s not real.) (College Humor via Gawker)

Special correspondent Billy Eichner does some serious investigative reporting for “Conan” on the subject of Madonna. Serious, yet also hilarious.