Cityfile: New York's Most Notable and Influential

Happy Birthday | She got married last weekend, but Ivanka Trump will be getting another big stack of presents today. It's her 28th birthday. Also celebrating: Simon Doonan, Barneys' inimitable creative director, is turning 57 today. Mega-agent Binky Urban is 63. Fashion photographer Mario Testino is 55. Gavin Rossdale is turning 42. NBC News' Andrea Mitchell is 64. Private equity bigwig Wes Edens is turning 48. Former Page Sixer Paula Froelich is 36. Henry Winkler turns 64. Actress Nia Long is turning 39. Kevin Pollak is turning 52. Harry Hamlin is 58. Cash Cab host Ben Bailey is turning 39. And Olympic gymnast Nastia Liukin is 20. A few weekend birthdays after the jump.More

Happy Birthday | It's a big day for birthdays: Ivanka Trump turns 27 today. (Hope Jared got you something nice!) Page Six's Paula Froelich is 35. Barneys creative director Simon Doonan is 56. The most powerful literary agent in the biz, Binky Urban, is celebrating her 62nd. Fashion photographer Mario Testino is 54. NBC News' Andrea Mitchell turns 63. Billionaire financier Wesley Edens is 47 today. Olympic gymnast Nastia Liukin is 19. Henry Winkler turns 63. Gavin Rossdale is 41. Actress Nia Long turns 38. Actor Kevin Pollak is 51. And Cash Cab host Ben Bailey is 38.

Spotted | Matthew Broderick riding his bike in Tribeca ... Keri Russell crossing the street ... Gavin Rossdale signing autographs outside ABC ... Kelly Ripa jogging outside for a TV segment ... Ugly Betty's Becki Newton and Michael Urie hugging on the sidewalk ... Alex Rodriguez leaving a parking garage in Midtown ... Kelly Cutrone in Soho, screaming on her cell phone ... Nastia Liukin on the set of Gossip Girl ... Zac Efron, Ashley Tisdale, and Vanessa Hudgens leaving lunch at Serendipity 3 on East 60th ... Katie Holmes getting out of an SUV outside the Schoenfeld Theatre ... and Tom Cruise and Suri boarding a helicopter.

• Designers must be clawing each others' eyes out to get Gossip Girl cast members at their shows. Well, score one for Rock and Republic, which has confirmed Chace Crawford will be in attendance. Maybe he'll turn up with Amanda Hearst, whom he was allegedly trying to "cozy up" with this past weekend. [Fashionista]
• As for gold medalist Nastia Liukin, she'll be at Peter Som, Isaac Mizrahi and Cole Haan. She's also launching a clothing line and will also be making an appearance on GG, naturally. [WWD]
• A series of sketches is the first glimpse of Isaac Mizrahi's new clothing line for Liz Claiborne, which will be in stores in January. [Fab Sugar/WWD] 

Prospects for ghost writers have suddenly improved as publishers scramble to sign up Olympic champions to write books about, presumably, focusing on your dreams and never giving up, no matter what. Michael Phelps' eight gold medals were topped off by a $1.6 million deal from Simon & Schuster for Built to Succeed, in which he'll "reveal the secrets of his success." Let's hope he can write as fast as he swims: according to the Post, the book is due on shelves in December. Meanwhile 18-year-old Russian gymnastics champion Anastasia "Nastia" Liukin (left) is in talks to write two books including, natch, an "inspirational memoir," for which she can draw on the journals she's sensibly been keeping in preparation for this very day.More