Natalie Portman has been very secretive about the birth of her first son in June, but several different sources, including Perez Hilton, are now reporting that the kid's name is ... Alef. Though not confirmed, Alef is a pretty good bet: It's the first letter of the Hebrew alphabet and means "leader." Portman, born Natalie Hershlag, is a native of Jerusalem. Though she moved to the US at age 3, she maintains dual citizenship and has said, "My heart’s in Jerusalem," notes the Momformation Blog. Click for more on Portman's baby.