The singer turned author promotes his new memoir. Plus: Usher, Eminem, Britney Spears and more

CIVIC ANGEL

Sarah Jessica Parker is the belle of the ball Wednesday, wearing a Narciso Rodriguez gown at a gala benefiting New York City's Museum of Natural History. Other celeb Manhattanites also on hand: Jerry and Jessica Seinfeld, and newlywed Billy Joel with wife Kate Lee.