Sienna Miller walking her dog ... Brooke Shields running errands around town ... Lindsay Lohan shopping at Curve on Mercer Street in SoHo and later heading off in an SUV ... Hilary Duff walking to the Gossip Girl set ... Jessica Szohr shopping at The Limited in SoHo ... Matt Damon filming scenes for The Adjustment Bueau in the rain ... Naomi Watts posing for a photo shoot outside the Cooper Square Hotel ... Shia LaBeouf spitting on the sidewalk outside his trailer on the set of Wall Street 2 .. . Michael Urie and America Ferrera shooting scenes for Ugly Betty ... and Jessica Simpson leaving Nobu after having dinner with hair stylist Ken Paves and her mom.