Sienna Miller walking with Jonny Lee Miller after having lunch at Cafe Gitane on Mott Street ... Rihanna arriving at the Bowery Hotel ... Drew Barrymore on the set of Going The Distance ... Philip Seymour Hoffman riding his bike downtown ... Tom DeLonge pushing a stroller in SoHo ... Christina Milian arriving at her hotel ... Leighton Meester filming scenes for Gossip Girl near Gramercy Park ... Britney Spears riding in a pedicab in Central Park, and later taking a CitySights tour with her dancers ... Jennifer Aniston leaving her trailer on the set of The Bounty in Queens ... Stephanie Pratt going to MTV studios in Times Square ... Hugh Jackman talking on his cell phone while driving with daughter Ava ... Hilary Duff going to the Britney Spears concert ... Gael Garcia Bernal and Amanda Seyfried shooting scenes for Letters to Juliet in SoHo ... and Sarah Jessica Parker leaving her West Village townhouse.