Mary-Kate Olsen Butters Up the Fashion Media

Meg Whitman tells Fortune that she’d spend $50 million of her own money to run to be California’s next governor. Nancy Pelosi sang along to “Aquarius” and “Let the Sun Shine In” at Broadway’s revival of Hair, while Fergie and Josh Duhamel caught a Saturday-night show of Fuerzabruta: Look Up. Chelsea Clinton, Ted Danson, and Mary Steenburgen danced up a storm at Elephant on East First Street for J.Crew’s Alix Berger’s birthday.

Fashionistas are whispering that Valentino, who supposedly retired two years ago (and was then fined $44 million for tax evasion), has secretly been designing for recent collections. Mary-Kate Olsen showed up at Yves Saint Laurent’s Metropolitan Opera Gala with handsome New York Times T magazine writer Alex Hawgood, but she says they’re just friends, and Mel Gibson was caught kissing a woman who was not his wife in Costa Rica.

Paula and Simon had better watch who they talk to. An American Idol insider is blabbing that the show’s judges and producers have already selected the final four contestants, despite the fact that there are still eleven rock-star wannabes in the running. Madonna’s stylist claims the star will join Britney Spears’s Circus stage during her March 23 show in NYC, and Jessica Simpson forgot the words to her own songs.

Will Arnett is working on a new comedy for Fox with Arrested Development creator Mitch Hurwitz. Andy Samberg is next up to host the MTV Movie Awards, set to air on May 31. Time Warner’s Jeff Bewkes power-lunched with Ron Meyer, the head of NBC Universal, at Michael’s the other day. Jon Stewart’s older brother, head of U.S. Markets & Global Technology at NYSE Euronext, may have helped him clobber Mad Money’s Jim Cramer in last week’s showdown. Leonardo DiCaprio and Kevin Connolly tore up the dance floor at Mr. West. Jake Gyllenhaal sweated out his vinyasa flow at Venice, California’s Yas yoga studio, ripping off his “Facebook Addict” T-shirt, much to the delight of his svelte female classmates.

And in honor of St. Patty’s day, Ancestry.com calculates that O’bama is 3.1 percent Irish.

Mary-Kate Olsen Butters Up the Fashion Media