Karl Lagerfeld looking over a street vendor's wares on Prince Street this weekend ... Chace Crawford hailing a cab in SoHo ... Jennifer Garner and daughter Violet leaving Matt Damon's apartment building on Lafayette Street ... Kelly Ripa leaving ABC studios in Midtown ... Jessica Alba holding hands with husband Cash Warren while carrying baby Honor ... Heidi Klum and Seal walking on the street on Friday... Naomi Watts and Liev Schreiber taking a stroll in NoHo ... Matthew Broderick walking son James to school in the West Village ... Kate Winslet standing on the sidewalk ... America Ferrera sipping coffee on the set of Ugly Betty ... Agyness Deyn walking with some friends ... Julianne Moore taking her daughter trick or treating on Friday afternoon in the West Village ... Katie Holmes and Tom Cruise going to lunch at Balthazar ... and Ryan Reynolds crossing the finish line yesterday in Central Park.