It's the glitziest tag sale, by a yard: Sex and the City's Sarah Jessica Parker kicks off the Get Organized New York project (sponsored by PEOPLE's sister publication Real Simple) at a gala event Wednesday in New York. This weekend's sale, taking place in Central Park and benefiting the city's public schools, will include castoffs from the actress's HBO hit (such as the chair Carrie bought from onetime fiancé Aidan), as well as Parker's own closet.