Cityfile: New York's Most Notable and Influential

Spotted | Jessica Alba in Soho pushing baby Honor ... Kate Winslet hailing a cab in the meatpacking district ... Robin Williams arriving at his hotel on Central Park South ... Blake Lively and Penn Badgley getting in a car after eating brunch in the West Village ... Ryan Reynolds walking by himself ... Kim Raver taking a lunch break on the set of Lipstick Jungle ... Ben Affleck, Jennifer Garner, and daughter Violet shopping for toys, and later getting in an SUV outside Matt Damon's apartment on Lafayette Street ... Paris Hilton, Ricky Gervais, and Elvis Costello posing in front of Letterman ... Keira Knightley on the set of her new movie in the meatpacking district ... country singer Clint Black leaving his hotel ... and Liev Schreiber, Naomi Watts, and baby Alexander going for a walk.

♦  Michael Phelps is telling people he's single even though he's actually dating Miss California runner-up Nicole Johnson. [R&M]
♦  Peter Cook's interview with Barbara Walters airs on Friday, but Christie Brinkley's lawyers now say he violated a confidentiality agreement by speaking with the network. [OK!, ABC News]
♦  Hugh Hefner says his relationship with Holly Madison began to crumble six months ago when they found out his sperm count was too low to father any kids. Also, he's already auditioning new girlfriends. [E!]
♦  Anna Wintour's latest celebrity obsession? Gerard Butler. [P6]More

Job Security for Orthodontists | No matter how bad the economy gets, American people will never stint on maintaining the cornerstone of our identity: Having better teeth than the Brits. The Office's Ricky Gervais, who's broken into Hollywood with his new movie Ghost Town, was asked by one interviewer about the "amazing set of horrible-looking fake dentist teeth" his character wears, except there's nothing fake about them. Our "obsession" with teeth is the biggest difference between the two nations, says Gervais, although soon the other major difference will be that one country still has banks in business. [BBC News]

Spotted | Marc Jacobs and boyfriend Lorenzo Martone kissing while eating outside at Pastis ... Liv Tyler walking in the Village with her son ... Andre Leon Talley walking with Venus Williams while wearing peep toe shoes ... Keira Knightley taking a stroll with a friend ... Diane von Furstenberg chatting with a group of women at a Fashion Week event ... Claire Danes and Jada Pinkett Smith posing for pics in the front row at Zac Posen's show ... Tobey Maguire being followed by paparazzi while jogging on the street uptown ... Natalie Portman walking under an umbrella on her way to the Rodarte show ... Heidi Klum en route to Bryant Park ... Tyra Banks standing outside and surrounded by fans ... Blake Lively striking a pose in Bryant Park ... Agyness Deyn looking like she's about to trip while making her way into the Kors show ... Goldie Hawn exiting a store ... Jessica Simpson leaving her uptown hotel en route to the Letterman show ... Eva Mendes going somewhere in a hurry ... Ricky Gervais standing on a street corner and talking to a woman ... and Lindsay Lohan leaving a party, followed closely behind by Samantha Ronson.

• Ricky Gervais and his girlfriend, British TV producer Jane Fallon, paid $1.66 million for a one-bedroom condo at the converted Barbizon hotel at 140 East 63rd Street. [Page Six, TRD]
• Jason Rabin, the apparel mogul who partnered with Beyonce's to launch her House of Dereon clothing line, has picked up an apartment at 850 Park Avenue with his wife, Nicole. The fourth-floor, three-bedroom spread had been listed for $4.6 million. [Cityfile]
• Former Giants defensive end Michael Strahan closed on a 2,000-square-foot loft in Tribeca last week for between $1.5 and $2 million. [WSJ]

(1) The 9th annual Art For Life Benefit took place on Saturday at Russell Simmons' East Hampton house. Despite tickets not selling out as fast as usual, the event played host to Aretha Franklin, Christy Turlington, Lorraine Bracco, Soledad O'Brien, David Paterson, Diddy, Padma Lakshmi, Brett Ratner, LA Reid, the cast of Real Housewives of New York, Al Roker, Kelly Bensimon, Alina Cho, Simon de Pury, and Porschla Coleman—whose break up with Simmons, judging by their behavior, is either incredibly amicable or no longer in effect. [PMc]

(2) Sara and Patrick Handreke hosted a screening of the new rom-com Ghost Town in East Hampton. Guests included Arden Wohl, Bennett Miller, Peggy Siegal, the film's star Ricky Gervais and Jane Fallon, George Stephanopoulos and Alexandra Wentworth, and Helen and Tim Schifter. [PMc] More