Ethan Hawke walking with wife Ryan Shawhughes and his three kids ... Nick Cannon and Mariah Carey getting out of their Maybach ... a cheery-looking James Franco holding a notebook and cup of coffee ... Diane Kruger hailing a cab ... Steven Tyler dressed in leopard pants outside the Trump International Hotel ... Bill Murray leaving a store with a woman ... Katie Holmes shopping with Suri and her parents ... Rihanna and Chris Brown catching a flight at LaGuardia ... Ashley Tisdale holding hands with her boyfriend at JFK ... and Amy Poehler, Cameron Diaz, and Casey Affleck heading into the SNL afterparty.