Jennifer Aniston checking her BlackBerry while walking with a friend ... Mary-Kate Olsen getting in an SUV in Soho ... Naomi Watts on Bond Street pushing baby Alexander in a stroller ... Whitney Port walking in meatpacking district ... Tony Hawk skateboarding outside the Gramercy Park Hotel ... Kate Hudson carrying a cup of coffee in the West Village ... Shannen Doherty holding onto her stylist's arm ... Katy Perry shopping in Soho ... Kylie Minogue heading into her hotel in Tribeca ... Patti Smith leaving lunch at Da Silvano ... Kate Bosworth and James Rousseau getting in a cab ... Rihanna shopping at Intermix, and later leaving dinner at Da Silvano ... and Amy Ryan leaving a movie set in Central Park.