Cityfile: New York's Most Notable and Influential

• The drama surrounding fashion's most famous headbutt continues: Kiefer Sutherland says he was "defending the honor" of Brooke Shields by attacking Jack McCollough, since Jack had knocked Brooke over and then failed to apologize. Brooke and Jack, however, say the push never even happened, and Kiefer was running around drunk and "looking for something to smack." The police are now investigating the matter, since apparently there aren't more important crimes to be tackling right now. [TMZ, TMZ, NYDN, P6]
• Anna Wintour and Rihanna were acting like old pals at a Costume Institute afterparty on Monday night, which certainly bodes well for Rihanna's chances of landing a Vogue cover in the future. [NYDN]
• Lindsay Lohan was supposed to chaperone her little sister to a party at LA's Roosevelt Hotel on Monday night, but ended up "getting up close and personal" with ex-boyfriend Jared Leto instead. [E!, P6]
• Casey Johnson, meanwhile, showed up to the same party and was overheard telling a friend that she and Courtenay Semel have broken up, again. [P6]More

Happy Birthday | It's Amanda Lepore's birthday today! At least we think it's her birthday and we think she's 41, but she's been known to fool people before. Others celebrating today: Margaret Cho is 40. The New Yorker's Calvin Trillin is 73. Novelist Joan Didion is turning 74. Little Richard is 76. Knicks center Eddy Curry is 26. Child star Frankie Muniz turns 23. Actor Nick Stahl is turning 29. And model Shalom Harlow is 35. Weekend birthdays after the jump.More

We hear all is not well with Times reporter Alex Kuczynski and her husband of six years, financier Charles Stevenson. Rumor has it the Times journalist and reformed plastic surgery junkie is contemplating a divorce from the billionaire mogul, who is nearly 25 years her senior (and who has been married four times). Although there's been no official word of the split as of yet, Kuczynski has maintained a low profile in recent weeks. While she's probably rather busy these days now that she's a new mom—Kuczynski and Stevenson had a baby boy via a surrogate back in April—friends were surprised when she backed out of a scheduled appearance last week at a Diane von Furstenberg-sponsored spelling bee benefit that she usually attends every year. She's also been noticeably absent from the pages of the Times the last few months. Perhaps fittingly, her most recent article in the paper in early October was a book review of Alec Baldwin's book, A Promise to Ourselves: A Journey Through Fatherhood and Divorce. "Divorce is a lonely business," Kuczynski wrote. "Divorce is hell. Lawyers are vultures."