Mario Lopez announced that he’s expecting a baby with girlfriend Courtney Mazza.

Rocking a thigh-high minidress, tomboy-no-more Kristen Stewart chats about her new flick, The Runaways , and her Oscar experience with Jay Leno .

Conan O’Brien is putting his new-found free time to good use. The former Tonight Show host announced a 30-city theater tour on Thursday. Conan’s sidekick Andy Richter will join him on the road, along with his Tonight Show band for the appearances which he promises will be “a night of music, comedy, hugging and the occasional awkward silence.” The tour kicks off April 12 in Eugene, OR. In January, O’Brien quit the Tonight Show instead of taking NBC’s offer to push his start time back by a half-hour. Since then he hasn’t announced any future plans for another television spot. “It was either a massive 30-city tour or start helping out around the house,” he joked. To see a full list of tour dates, click here .

Heidi Montag has finally come to her senses and decided to ditch her loathsome husband, Spencer Pratt …in business at least. Pratt, who  has served as Montag’s manager since the couple met five years ago, is being replaced by Malibu-based psychic, Aiden Chase. “After the incredible experiences I have had healing my life and truly connecting to my dreams with healer intuitive Aiden Chase, I have officially asked him to become my manager,” Heidi tells People magazine. “Having an intuitive psychic leading my team gives me an edge no one else has.” “No longer is my husband the face of my business or managing my career,” she continued. “I am going to have Aiden Chase help manage my new life and career in a very different and positive way with light and love. The time for change is now. Never mix business and pleasure. We are no longer Speidi but Spencer and Heidi.” Talk about the end of an era! Heidi’s upcoming plans include a Ron Howard related business venture, and starring in a feature film.

Ellen takes a look back at her fab year as a CoverGirl, from starring in Beyoncé’s “Single Ladies” video to…being the Hero on the Hudson?!

Oops! Jimmy Fallon wipes out and cuts his hand after challenging Chelsea Handler to a martini race on Tuesday’s Late Night show.

The Bounty Hunter co-stars pose for a steamy new photo shoot in W magazine’s April 2010 issue.

The nickname Material Girl has never been more suitable for Madonna . The Queen of Pop and her manager, Guy Oseary have teamed up with Iconix to launch an affordable, juniors line which will be available exclusively at Macy’s beginning in August. Madge isn’t looking very far for her inspiration for the line, appropriately called Material Girl . Her 13-year-old daughter Lourdes is not only the collection’s muse, but has also lent a hand in design aspects. The clothes range in price from $12-$40, and includes skirts, shirts, shoes, jewelry and handbags. Aside from the Material Girl line, Madge and Guy’s collaboration with Iconix will include beauty and fragrance merchandise in 2011. “Joining forces with Iconix to bring my fashion ideas to consumers is very exciting for me,” Madonna said in a statement. “I look forward to working closely with Neil [Cole, CEO and Chairman of Iconix Brand Group] and his team to create and translate my vision and ideas for MG Icon.”

Rumer Willis guest stars as a lesbian on the CW’s 90210 and kisses Jessica Lowndes’ “Adrianna” on Tuesday night’s episode.

Kristen Stewart and Dakota Fanning get in character for their new movie, The Runaways , and besides their mullets and ’70’s gear, they have the whole music thing down pat. Playing the roles of Cherie Currie (Fanning) and Joan Jett (Stewart), the girls put their rocker faces forward for to remake The Runaways classic, “Cherry Bomb.” Dakota and Kristen go grunge for other hits like “California Paradise” and “Queens of Noise” which will also appear on the soundtrack for the movie set to hit theaters on April 9. Watch the music video for “Cherry Bomb” here: Dakota Fanning featuring Kristen Stewart – New Music – More Music Videos

Actor Corey Haim is dead after a reported accidental overdose at the age of 38.

The wait is over…well, almost! When die-hard fans last parted ways with Bella Swan ( Kristen Stewart ) and Edward Cullen ( Robert Pattinson ,) the vampire hottie had proposed to his human girlfriend. Now the first look at Twilight’s third installment, Eclipse , has hit the web–and will definitely leave Twi-hards wanting more with sensual scenes between Bella and Edward, and Bella and the werewolf Jacob Black ( Taylor Lautner .) Eclipse hits theaters June 30, but for now, here’s a preview to hold you over!

In a new radio interview with Ryan Seacrest , Jessica admits how hurt she was when she was called fat and how disappointed she is in John Mayer .

Just before big premiere, Lady Gaga leaks new photos from “Telephone” music video featuring Beyonce.

Robert Pattinson tells The Early Show he would be willing to shave his infamous hair for a movie role!

Jason Mesnick and Molly Malaney tie the knot on a special wedding edition of The Bachelor .

American Idol judge Simon Cowell got a little uncomfortable when Jay Leno asked him about his engagement to makeup artist Mezhgan Hussainy.

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If you can’t laugh at yourself, nobody can…right? In this new Funny or Die video, reality star Heidi Montag spoofs her recent plastic surgery jobs (all ten of them!) and gets a little help from Oscar-winning director, Ron Howard. The video, set up like an infomercial, urges Congress to enact financial reform–and pokes fun at celebs who may not be able to afford their own nip/tuck action. Of course even Heidi’s fame-lovin’ hubby Spencer Pratt makes a cameo for the vid. Watch Heidi’s plea here:

If you can’t laugh at yourself, nobody can…right? In this new Funny or Die video, reality star Heidi Montag spoofs her recent plastic surgery jobs (all ten of them!) and gets a little help from Oscar-winning director, Ron Howard. The video, set up like an infomercial, urges Congress to enact financial reform–and pokes fun at celebs who may not be able to afford their own nip/tuck action. Of course even Heidi’s fame-lovin’ hubby Spencer Pratt makes a cameo for the vid. Watch Heidi’s plea here: