Uma Thurman and son Levon Roan eating pizza on the street ... Hugh Jackman heading home after a trip to the gym ... Diana Ross leaving a building on Fifth Avenue ... JoJo walking into her hotel in Tribeca ... Taylor Momsen hanging out with her mom on the set of Gossip Girl in Queens ... Matthew Broderick walking son James to school ... Catherine Zeta-Jones leaving her apartment on the Upper West Side ... and Lady Gaga arriving at Radio City Music Hall last night.