American and Israeli actress Natalie Portman has a baby boy to go along with her Oscar.The actress gave birth to her first child with fiance Benjamin Millepied, the choreographer of Black Swan.A publicist for Portman did not return a message seeking comment on Tuesday.The 30-year-old actress and Millepied, a well-regarded ballet dancer and choreographer, met during the making of Black Swan, Darren Aronofsky's psychological thriller that stars Portman as a ballet dancer.Portman won the best actress Academy Award in February for her performance in the movie.