The Hills villain Spencer Pratt admits his marriage to Heidi Montag on November 19 in Mexico was fake — but only because he was uninformed.

“I didn’t even know you have to legalize a wedding,” Spencer claims to In Touch. “I thought growing up, you say ‘I do’ and you’re married.”

Heidi agrees.

“We had our elopement, and to me, that counts,” she said. “But we’re going to have a bigger wedding for friends and family.”

Vows Spencer, “We’ll definitely have it on TV because of the fans and haters.”

Wearing a super slinky number, Hilary Duff stops to sign some autographs as she heads home after a night out in Hollywood on Monday (January 5).

The 21-year-old singer/actress was seen leaving Japanese restaurant, Katsuya, with Robin Williams’s daughter, Zelda, 19. Also spotted inside: 90210 starlet Shenae Grimes.

Hliary recently opened up to Maxim about her sex life: “You know what? I was quoted saying I was a virgin, but I absolutely did not say that. That’s nobody’s business but my own.”

10+ pictures inside of Hilary Duff getting her Katsuya kick…

Zac Efron sheds his goody-two-shoes image to voice the character of lounge singer “Billy Joel” in this new clip from Adult Swim’s animated series Robot Chicken.

In the show, the 21-year-old former High School Musical star beats a sailor over the head with a beer bottle, dumps his body in the ocean and manically laughs about it.

Zac even gets to belt out his own rendition of Billy Joel’s “The Piano Man”! But in the end… his character gets brutally (but amusingly) stabbed to death.

Check out the NSFW clip below!

• Jerry O’Connell is one proud papa.
• Josh Krasinski and Emily Blunt celebrate NYE together.
• The Bachelor host Chris Harrison blogs about the first episode of the ABC reality show.
• Kristin Cavallari hits the beach.
• Sean Penn and Josh Brolin share sweet nothings at NY Critics Circle Awards.
• Katie Holmes injects New York City.
• Paris Hilton is shimmery in silver.
• Lily Allen’s Facebook threatens Katy Perry.
• Sheryl Crow shops for a new nest.
• Tara Reid is getting straight A’s in rehab.
• Michael Cera dons a wig!
• Rihanna and Chris Brown are reportedly engaged. Daily News sources say Chris popped the question on New Year’s Eve and Rihanna was sporting a huge diamond on her ring finger after performing with Chris at London’s 02 arena.
• Apple CEO Steve Jobs, who’s skipping today’s Macworld conference for the first time in a decade, revealed yesterday that his gaunt face and emaciated frame are the result of a treatable hormone imbalance. Experts say his current medical problems are likely linked to the malignant tumor that was removed from his pancreas in 2004.
• Gary Oldman married musician Alexandra Edenborough at the Presidio Chapel in Santa Barbara, Calif., at 6 p.m. on Dec 31. The newlyweds then had dinner with friends at San Ysidro Ranch.
• Tobey Maguire is co-producing a film version of the Off-Broadway musical “Rock of Ages.”
• Scrubs begins its eighth and presumably final season on ABC tonight. The network picked up the show when it ended its NBC run in May.
• In celebration of Black History Month, Ludacris will headline the Hip Hop 101 concert on February 21 at the Los Angeles Sports Arena. Keri Hilson will also perform. More acts will be announced later.

Sophia Bush chats on her iPhone while strolling down a street in Los Angeles on Monday (January 5). The 26-year-old One Tree Hill star was seen carrying around a Chanel shopping bag and checking her email.

Sophia’s upcoming movie, The Narrows, has a new trailer out (NSFW). The drama is about a photography student from a tough neighborhood in Brooklyn, who takes a job from a local mob boss in order to pay his college tuition. His double life becomes dangerous when the two worlds violently collide. The Narrows also stars Kevin Zegers, Vincent D’Onofrio and Eddie Cahill.

10+ pictures inside of Sophia Bush shopping Chanel…

Cameron Diaz pushes her own luggage through LAX airport in Los Angeles, hoping to catch a flight out of town on Monday (January 5).

Chris Rock, Jessica Lange, and Cameron Diaz have all signed up to be presenters at the 66th annual Golden Globe Awards gala in Los Angeles organizers said.

Drew Barrymore, Jake Gyllenhaal, Salma Hayek, Blake Lively, and Jennifer Lopez have already been announced as presenters.

Cameron, 36, was very open about her New Year’s resolutions. “I have always had the same New Year resolutions: to stop smoking, to start wearing a bra and to stop shopping.”

Tom Cruise and Katie Holmes walk hand-in-hand after sharing a romantic dinner at Japanese restaurant, Nobu, in New York City’s Tribeca on Tuesday night (January 5).

A musical version of Finding Neverland is in the works and the part of Sylvia Llewelyn Davies has been offered to Katie Holmes, reports The Telegraph. Katie beat out Kate Winslet, who portrayed Sylvia Llewelyn Davies in the 2004 film Finding Neverland. Winslet’s spokesperson confirmed she will not be a part of the musical.

WHAT DO YOU THINK of Katie Holmes as Sylvia Llewelyn Davies in Finding Neverland?

10+ more pics inside of Tom and Katie jumping at Japanese…

Reese Witherspoon visits a medical center in Beverly Hills on Monday, and leaves with a shocked expression on her face.

While at a Lakers game in LA on Sunday, Reese and Jake Gyllenhaal kissed while they were being featured on the jumbotron.

Reese’s next feature film is Monsters vs. Aliens, which gets released March 27 in the US. Kiefer Sutherland, Seth Rogan, and Reese all lend their voices for the animated film, and will be featured in a 90-second trailer during the halftime show at the Superbowl.

• Jessica Alba hangs out with her baby Honor
• Will Tom Brady propose to Gisele anytime soon?
• Jett Travolta will be cremated
• Bohemian apparently never goes out of style
• Gwyneth Paltrow and Oprah chat about weight loss
• Amy Winehouse has some fun in the sun
• Alina Vacariu was Romania’s Model of the Year
• Selena Gomez is ready to start a rock band
• Jett Travolta’s body shows no sign of head trauma and his death certificate says he was killed by a seizure, an undertaker said Monday
• Patricia Arquette filed for divorce from actor Thomas Jane in Los Angeles on Monday, citing irreconcilable differences.
• Rihanna will shun skimpy outfits when she performs in Malaysia next month, the concert’s organizers said Tuesday, becoming the latest international star affected by the Muslim-majority country’s strict rules on performers’ dress.

Lindsay Lohan heads back to her SUV with her little sister, Ali Lohan (blue plaid shirt), after browsing at H.D.Buttercup in LA on Monday.

The 22-year-old Mean Girls actress wrote on her MySpace Celebrity blog on Monday evening, that she and Ronson are still together. She wrote,

“RUMORS

little piece of TRUE information:

we did NOT break up!

access hollywood, extra, et, every tabloid, page six… AND every GOSSIP website. Get your stories straight please. It’s really annoying to have all of your friends emailing you saying, i saw, i read, etc… NOT TRUE

xoxox Lindsay”