Yes indeedy, the blonde wisp-angel is performing at this year's Oscars. Also today: turns out The Walking Dead actually does need writers, Ben Affleck might be headed to Tehran, and MTV finally says no to Lauren Conrad.

• Remember the dust-up a couple of weeks ago when it was reported that Beyoncé had performed for the son of Libyan dictator Moammar Khadafi in St. Bart's on New Year's Eve? Photos of the concert have now surfaced, although the worst thing about them may be how Beyoncé looks like she's the headliner at a tacky club in New Jersey. [DM]
• Is Bethenny Frankel trying to pull a Star Jones? It seems Frankel has been approaching vendors and asking them to "sponsor" her wedding: She'd get their services gratis and, in exchange, they'd get a mention on her upcoming reality show, Bethenny's Getting Married. The only problem with Bethenny's grand scheme? She hasn't had much luck finding companies interested in taking part. [NYDN]
• Here's a great idea: David Letterman has reportedly invited Conan O'Brien to appear as a guest on his show. Cross your fingers! [PopEater]
• Justin Timberlake and Jessica Biel have not broken up, in case you were concerned. According to friends, he'd committed to working on a film in Wyoming, which is is why he didn't climb Mt. Kilimanjaro alongside Biel. It's not because he didn't want to, say, spend a week living with the love of his life in a tent. He would have totally done it if he could have. Really. [P6]
• Brad Pitt and Angelina Jolie donated $1 million yesterday to Doctors Without Borders to fund emergency medical operations in Haiti. As for whether Tiger Woods really paid to send a plane full of medical supplies to the devastated nation, that's a (pretty unlikely) story that Russell Simmons has been circulating, though Tiger's reps have yet to confirm it. But it wouldn't be the worst way to begin rebuilding his image, come to think of it. [Us, TMZ]

Marc Jacobs has several reasons to celebrate today. In addition to his recent engagement, he'll also be blowing out 46 candles on his birthday cake today. Others marking the big day: NBC chief Jeff Zucker is 44. Hugh Hefner turns 83. Cynthia Nixon is 43. Leighton Meester is turning 23. Albert Hammond Jr. is turning 29. Joe Scarborough is 46. Porn queen Jenna Jameson is 35. Dennis Quaid turns 55. Fashion designer Martin Margiela is 52. Restaurateur Taavo Somer turns 36. Twilight actress Kristen Stewart is 19. Jesse McCartney turns 22. America's Next Top Model winner Yoanna House is 29. And former model-turned-ANTM judge Paulina Porizkova is 44.

Blake Lively signing autographs outside the David Letterman show ... Michelle Williams and daughter Matilda holding hands ... Katy Perry, the Pussycat Dolls, and Jesse McCartney performing in Rockefeller Center ... Kevin Jonas shopping with a bodyguard on Fifth Avenue ... Michael Phelps giving swimming lessons at an event at a YMCA ... Alec Baldwin shooting scenes for 30 Rock ... actress Kristen Johnston walking her dog through SoHo ... Jessica Szohr grabbing a bite to eat on the set of Gossip Girl ... and Katie Holmes saying goodbye to John Lithgow after the two had dinner downtown.