Yesterday now-legendary conservative horndog Mark Sanford admitted that he'd "crossed the lines" with a "handful" of women not named Jenny Sanford during his marriage to Jenny Sanford, but claims he never "crossed the ultimate line." So what did he do?

Page Six gossip Paula Froelich's first novel is concerned with a certain set of New York ladies in crisis, Mercury in Retrograde (she may be among them, as a "composite"). So surely other "composites" were in attendance at her book party last night.

Fashion Week queen bee Fern Mallis turns 61 today. The legendary Diana Ross turns 65. Nancy Pelosi is 69. Keira Knightley is celebrating her 24th. Steven Tyler is 61. Curtis Sliwa turns 55. Michael Imperioli is 43. Journalist Bob Woodward turns 66. Author Erica Jong is 67. Martin Short is 59. James Caan is turning 69. Amy Smart is 33. Jennifer Grey is 49. Leeza Gibbons turns 52. Kenny Chesney is turning 41. NBC's Chris Hansen turns 50. Hedge fund manager William von Mueffling is 41. And Elaine Chao, the former Labor Secretary and current sister-in-law of Bruce Wasserstein, is 56 today.

These are difficult times for hedge fund king Paul Tudor Jones but he was all smiles as the guest of honor at last night's 11th annual NYU Child Study Center Gala at Cipriani 42nd Street. Joining Jones and his wife Sonia (left) was the center's director, Harold Koplewicz, co-chairs (and fellow finance big wigs) Gary Cohn and Lisa Pevaroff, David and Danielle Ganek, and Michael Novogratz and wife Sukey, and a crowd of nearly 600, including Vera Wang and Arthur Becker, Jon Corzine, Elie Wiesel, Jane and Jimmy Buffett, Ellen Barkin, Erica Jong, Jane Rosenthal, Christiane Celle, Faith Popcorn, Al D'Amato, Larry Silverstein and wife Klara, Neal Shapiro and Juju Chang, Julie and Ed Minskoff, Elaine and Ken Langone, Susan and Martin Lipton, Claude Wasserstein, Linda and Arthur Carter, Alice and Tom Tisch, Vicki and Stuart Match Suna, and Brooke and Dan Neidich. [PMc, NYSD]

Gucci celebrated the launch of its Tattoo Heart Collection on Wednesday, a line of products that benefits UNICEF. Rihanna, who is the new face of the campaign, was joined Gucci creative director Frida Giannini at a snowflake lighting ceremony at the Grand Army Plaza, which was followed by an event at Gucci's flagship and dinner at the Plaza's Oak Room. Guests included Madonna, Penn Badgley, Blake Lively, Adrian Grenier, Monet Mazur, Timbaland, Mary J. Blige, Erin Wasson, Becki Newton and Chris Diamantopoulos, Kelly Rutherford, Patricia Field, Charlotte Ronson, Shoshanna Lonstein Gruss, Jessica Joffe, Julia Restoin Roitfeld, Mamie Gummer, Eleanor Ylvisaker, Bethenny Frankel, Anja Rubik, Hal Rubenstein, Magnus Berger, Joe Zee, Kelly Killoren Bensimon, Lizzie and Jonathan Tisch, and Maggie Betts. [Style.com, NYO, PMc, Wireimage]

Erica Jong says Matt Taibbi wants to fuck his mom! But he can't, so instead he channeled that desire into print by calling Hillary Clinton's arms "flabby." It's all part of the feminist author Jong's theory of "Misogyny, Momism, and Militarism," which she chronicled on the Huffington Post. "Momism is a kind of Oedipal obsession with the bad mother — to counter a boy's attraction to his good mother...You cannot fuck your mother so you must revile her," she explains. Taibbi, the angry Rolling Stone writer who is the most entertaining political journo in America, surprisingly took offense to Jong's logical inference that his use of an accurate adjective in a magazine story pointed to his own desire for incest. So he replied: you're an old, ignorant hack, Erica Jong!

Erica Jong's sister has resented her for 35 years, since the publication of Jong's famous novel Fear of Flying. She unleashed her anger recently, and unexpectedly, at a laudatory academic conference on the book at Columbia, telling the New Yorker afterward, "I gave myself permission to be a bitch." She is angry because, she said, her husband was slandered in Fear of Flying, depicted as demanding a blowjob from Jong. But Jong has always branded the book a work of fiction and is shooting insults back at her sister. So begins a feud that is so much more delicious than a trillionth rehashing of Jong's feminist classic.

Jong reinvented sex in the '70s with Fear of Flying, which advocated the "zipless fuck"—no-strings adultery. The novel has been translated into 27 languages and sold more than 12 million copies.

Blogging away over at HuffPo, author Erica Jong uses the joyous occasion of her grandson's bris today to complain about how he'll grow up with an Asian fetish and end up marrying Sandra Oh. No, seriously. Because they are going to cut off little Darwin's foreskin, he will become obsessed with big-titted chiksas. And black ladies! "Either they marry you and run around with Diana Ross or Beyonce or Naomi Campbell," Jong explains, "or they marry Sandra Oh or Lisa Liu or Yoko Ono and she converts." G-d forbid! All because they're still obsessed with how, when they were a couple days old, a scary old man took a scissors to their manhood. Someone's bitter! And basically awesome! (Jong, who married an Asian man many moons ago, knows from what she speaks.) [HuffPo]

New York society chronicler David Patrick Columbia is a little blue! He went out to lunch with Erica Jong the other day, and they talked about the YouTube videos about Henry Kravis and the tax-dodging mogul set. But lunch with Erica put him in a maudlin frame of mind, even though they went on to talk about Hillary Clinton. But how can one feel down when one receives such an amazing Christmas card from Dr. Sherrell and Muffie Potter Aston?

There is something about being in novelist Erica Jong's apartment that makes a person feel a certain degree of—how to put this?—sexual license. Maybe it is to do with the enormous Tom Wesselmann nude that greets visitors in the foyer, all big lips and blonde hair contrasting with dark pubes. Maybe it is just knowing that you are in the home of the lady who coined and, you know, engaged in "the zipless fuck," even for those who could only have the thrill of discovering 1973's Fear of Flying on their parents' bookshelves. Maybe it is that Erica herself is such a hot tamale! In any event, something made me feel like it would be okay to go up to British author Ken Follett and start telling him my dirty secrets right off the bat. Photographer Kathy Lo was the youngest person there by at least five years.