Rihanna Had to Perform With Britney  —  You know how you were young and just about to go someplace really awesome, only to have your parents make you take your little brother or sister with you?  That has to be what it feels like to find out you're performing with Britney Spears.

Pics!!!  Lindsay Lohan Upskirt Shot & Nipple-Slip - All At The Same Sexy Photoshoot!  —  Lindsay Lohan did a photoshoot for Plum Miami Magazine yesterday.  The art direction for this editorial seems to have been - Put Lindsay in very sheer, flowy dresses on top of a building with a wind machine.

‘Two and a Half Men’ Star Ashton Kutcher Has Only a One-Year Contract … On Wednesday, CBS Corp. trotted out Ashton Kutcher as the new face of its hit sitcom “Two and a Half Men,” giving him time on stage during its presentation of its coming TV schedule to advertisers.

David Schwimmer and Wife Welcome Baby Girl  —  It's a girl for David Schwimmer!  —  The actor-director's wife, photographer Zoe Buckman, delivered their daughter Cleo Buckman Schwimmer on Sunday, May 8 in New York, his rep tells PEOPLE.  —  Schwimmer, 44, wed the London-born Buckman, 25, last June after dating since 2007.

'I'm learning to celebrate what I was born with': Why life is shaping up nicely for Christina Hendricks  —  Adored by men (and envied by women) for her hourglass figure, Mad Men's Christina Hendricks is loving every minute of her success.  She talks to Lina Das about relishing her curves …

Britney Spears & Rihanna's Sexy Performance at Billboard Awards (PHOTOS)  —  As if “S&M” wasn't a sexy enough song when just performed by Rihanna, the Billboard Awards made it even hotter when Rihanna and pop icon Britney Spears took the stage!  —  The two looked like good and bad angels without pants.

Ahnold: I'll be broke  —  By SELIM ALGAR in LA and TODD VENEZIA in NY  —  It's not a rumor: If Maria Shriver terminates her marriage with Arnold Schwarzenegger, it could be one of the costliest celebrity splits ever.  —  Horny Arnie and his jilted journalist-wife, who split after learning the …

Zach Galifianakis Shoots Up Heroin with Bill Maher  —  Zach Galifianakis is sure upping the ante when it comes to his on-air drug use.  Forget marijuana, Galifianakis is clamoring to join the big leaguers who partake in the high-life.  —  In October 2010, Galifianakis set the Internet …

“You Light Up My Life” Songwriter Joseph Brooks Commits Suicide  —  Joseph Brooks, an Academy Award winning songwriter, was found dead in his NYC Upper East Side apartment Sunday afternoon in an apparent suicide.  He was famous for writing the 1977 Oscar-winning song, “You Light Up My Life.”

Report: Record Deal For Gwyneth Is Off  —  Don't quit your day job Gwynnie!  Paltrow's talks for a record deal with Atlantic Records has recently gone kaput, according to reports.  Did the execs accidentally see Country Strong?  The Oscar winner was close to a deal in March with Atlantic Records …

Princess Beatrice's Hat Fetches $130,000  —  The hat that got a million tongues wagging - the pretzel-shaped fascinator atop Princess Beatrice's head on Royal Wedding Day - has been sold to an anonymous bidder.  —  The price?  $130,000, and it's all going to charity.

Aubrey O'Day is a good host  —  Aubrey O'Day bikini pics!  (Las Vegas - 5/21)  —  Aubrey O'Day hosted a party at Liquid Pool Lounge in Vegas on Saturday, and holy s**t, look at that body.  How does this chick not topple over when a slight breeze hits her?  She's built like an umbrella.

Brad Pitt's Movie Wins Top Prize in Cannes  —  As the 64th Cannes Film Festival came to a close Sunday, its jury awarded the top prize to a movie that split the critics: director Terrence Malick's The Tree of Life, starring Brad Pitt and Sean Penn.  —  Jury president Robert De Niro made the announcement …